This Week in Evolution
This Week in Evolution is a podcast on the biology of what makes us tick. Hosts Nels Elde and Vincent Racaniello take you through the new evolution that has been revolutionized by the field of genomics and molecular biology.
Episodes
TWiEVO 128: Ready, set, cell
Nels and Vincent discuss a chemically defined synthetic cell capable of growth and replication. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Chemically defined synthetic cell (bioRxiv) Timestamps by Jolene Science Picks Nels – Jimothy the short spined racoon in Seattle Vinc
TWiEVO 127: The barley knew what to mildew
Nels and Vincent discuss molecular mimicry of a pathogen virulence target by a plant immune receptor. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Molecular mimicry of a pathogen virulence target by a plant immune receptor (Science) Timestamps by Jolene Science Picks Nels –
TWiEVO 126: Beyond Inheritance with Roxanne Khamsi
TWiEVO 126: Beyond Inheritance with Roxanne Khamsi June 1, 2026 Science journalist Roxanne Khamsi joins Nels and Vincent discuss her first book, Beyond Inheritance, which explores how DNA continuously mutates throughout our lives, challenging the idea that our genetic destiny is fixed at birth. Hosts: Nels Elde and Vincent Racaniello Guest: Roxanne Khamsi Subscribe (free): Apple Podcasts, RSS,
TWiEVO 125: Evolution's egg timer
Nels and Vincent discuss the development of a comprehensive transcriptomic atlas of early embryogenesis from 61 animal species to understand the control of gene expression transitions from maternally deposited products to newly transcribed zygotic RNA. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the Mi
TWiEVO 124: The little ribozyme that could
Nels and Vincent discuss the discovery of a short RNA with the ability to catalyze its own synthesis. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server A small polymerase ribozyme (Science) Timestamps by Jolene Science Picks Nels – The University of Illinois Just Released a Popc
TWiEVO 123: Stinkbug eggs with a schmear of fungus
Nels and Vincent explain how stinkbug females smear fungus on their eggs to protect them from wasp parasitism. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Defensive fungal symbiosis on insect hindlegs (Science) Timestamps by Jolene Science Picks Nels – Meet the Olympic sup
TWiEVO 122: The evolution of selfishness
Nels and Vincent explain how selfishness evolved multiple times from an essential tRNA synthetase gene in a nematode. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Evolution of selfishness from a tRNA synthetase gene (Nat Ecol Evol) Timestamps by Jolene Science Picks Nels -
TWiEVO 121: AI imagines viruses
Nels and Vincent examines the use of AI and genome language models to design novel derivatives of bacteriophage phiX174. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server AI design of bacteriophage phiX174 derivatives (bioRxiv) Timestamps by Jolene Science Picks Nels – NIH offic
TWiEVO 120: Sparkle pony
Nels and Vincent explain research which shows that insertion of a retrovirus into the genome regulates a novel color trait in swordtail fish. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Retrovirus and swordfish scale color (bioRxiv) Timestamps by Jolene Science Picks Nels
TWiEVO 119: Drive fast, take chances, and encode a Y chromosome
Nels and Vincent explain research attempting to explain why among humans, females around the world live on average 5 years longer than males, but the trend is reversed in many birds, amphibians, and insects. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Sexual selection driv
TWiEVO 118: Mother of an unrelated brother
Nels and Vincent discuss research which shows a shift from the rule that living organisms produce same-species offspring: an ant that produces individuals from two distinct species. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server David Baltimore interview (TWiV 100) One mother
TWiEVO 117: Genes that don't leave
Nels and Vincent discuss research on hidden evolutionary constraints that dictate the retention of coronavirus accessory gene, which was flagged by NIH as potentially dangerous gain-of-function research. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Hidden evolutionary const
TWiEVO 116: An ant and two fungi walk into a bar and meet a naked mole rat
Nels and Vincent review research on how neuropeptides influence the behavior of leafcutter ants, and regulate the different caste behaviors such as defenders, leaf foragers, brood care, and fungus farming. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Neuropeptides and behavi
TWiEVO 115: Even the archaea are going viral
Nels and Vincent discuss an ultra reduced archaeal genome, the closest cellular entity to date that approaches a viral strategy of existence. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Ultra-reduced archaeal genome (bioRxiv) Timestamps by Jolene Science Picks Nels – The B
TWiEVO 114: The best experiments ever done
Nels and Vincent review the properties of Mendel's pea genes through the lens of modern genetic analysis. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Insights into Mendel's pea genes (Nature) Timestamps by Jolene Science Picks Nels – Evolution related game Vincent – Should
TWiEVO 113: A wolf in wolf's clothing
Nels and Vincent explain the ancestry and evolution of the extinct dire wolf. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Evolution and ancestry of dire wolf (bioRxiv) Timestamps by Jolene Science Picks Nels – Navigating to the forefront of innovation: A celebration of imm
TWiEVO 112: Sex-Z cephalopods
Nels and Vincent explain the ancient evolutionary origin of sex in cephalopods. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Evolution of sex in cephalopods (Current Biol) Timestamps by Jolene Science Picks Nels – Speaking into a microphone? Your audio quality can impact th
TWiEVO 111: Copy that, genome
Nels and Vincent explain how template switching during DNA replication is a widespread source of adaptive gene amplification. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Template switching and gene amplification (eLife) Timestamps by Jolene Science Picks Nels – Jeremy Berg
TWiEVO 110: Ants go from carpenters to surgeons
Nels and Vincent reveal that worker ants amputate their colleagues injured leg to prevent infections. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Wound-dependent leg amputation in ants (Curr Biol) Timestamps by Jolene Science Picks Nels – The Science Bridge Vincent – US wi
TWiEVO 109: On the origins of orange
Nels and Vincent discuss the molecular and genetic origins of sex-linked orange coat color in cats. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Orange coat color in cats (bioRxiv) Timestamps by Jolene Science Picks Nels – AI takes up science podcasting Vincent – Humans evo
TWiEVO 108: A virus in every parasite
Nels and Vincent review the identification of a novel virus associated with the pathogen Plasmodium knowlsei and which is part part of a diverse and unclassified viral taxon. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Virus associated with P. knowlsei (bioRxiv) Timestamps b
TWiEVO 107: One small step for cells, one giant step for cell kind
Nels and Vincent discuss the origins of eukaryotes, with contributions from at least 3 bacteria (alphaproteobacteria) and a large contribution from DNA viruses with large genomes. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Complex symbiotic interactions during eukaryogenesi
TWiEVO 106: What's old immunity is new again
Nels and Vincent explain how homology searches of anti-phage systems in eukaryotic genomes can be used to discover proteins of the human immune system. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Human antiviral effectors from antiphage systems (Cell Host Micro) Timestamps
TWiEVO 105: Not every rose has its thorn
Nels and Vincent look at how plant prickles, sharp epidermal projections that provide defense from predators and other advantages, arose by convergent evolution, the emergence of analogous traits in distantly related species. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Dis
TWiEVO 104: Wooly mammoth prosciutto
Nels and Vincent discuss the genome sequence of an ancient wooly mammoth, which shows that the three-dimensional architecture of the DNA can persist after 50,000 years. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Three dimensional architecture of 50,000 year
TWiEVO 103: Change the world by duplicating yourself
Nels and Vincent explore a direct experimental test of Ohno's Hypothesis, which states that gene duplication can help genes tolerate new mutations and thus facilitates the evolution of new phenotypes. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Direct test o
TWiEVO 102: Kelp gets some viral help
Nels and Vincent explain how deep genomics of macroalgae illuminate multiple paths to aquatic, photosynthetic multicellularity. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Paths to aquatic, photosynthetic multicellularity (Mol Plant) Timestamps by Jolene Sc
TWiEVO 101: 99 problems but a tail ain't one
Nels and Vincent review the genetic basis for tail-loss evolution in humans and apes. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Genetic basis of tail loss evolution in apes (Nature) Timestamps by Jolene Science Picks Nels – Will Brie and Camembert Cheeses
TWiEVO 99: A shocking means to move genes
Nels and Vincent reveal how electric organ discharge from the electric eel facilitates the introduction of DNA into teleost larvae. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Electric eel discharge moves DNA into cells (Peer J) Timestamps by Jolene Science
TWiEVO 100: Spaces that celebrate science
Rich Condit joins Nels and Vincent at the Science Mill in Johnson City, Texas, where Director of STEM Education Jeehyun Park talks about the goals of the childrens' museum. Hosts: Nels Elde, Vincent Racaniello, and Rich Condit Guest: Jeehyun Park Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server The Sci
TWiEVO 98: The worms strike back!
Nels and Vincent discuss how behavioural individuality determines infection risk in clonal ant colonies. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Infection risk in clonal ant colonies (Nat Comm) Timestamps by Jolene Science Picks Nels – Fungi (lichens) i
TWiEVO 97: Germs trapping worms
Nels and Vincent review a study of the key processes required for the different stages of fungal carnivory by a nematode-trapping fungus. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Discord server Fungal carnivory by a nematode-trapping fungus (Plos Biol) Timestamps by Jol
TWiEVO 96: Going bananas over the origins of corn
Nels and Vincent discuss the origins of two modern day agriculturally important plants: a role for two different wild teosintes in making modern maize, and the origin and evolution of the triploid cultivated banana genome. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Join the MicrobeTV Disc
TWiEVO 95: Watering the viruses until they bloom
Nels and Vincent discuss how the rewetting of seasonally dried soils, a critical event in Mediterranean grasslands that reactivates dormant soil microorganisms, leading to pulses of carbon and nitrogen mineralization, and is accompanied by a bloom of viral diversity, followed by extensive viral community turnover. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Pod
TWiEVO 94: A bacteria, a phage, and a selfish element walk into a cryptomonad
Nels and Vincent take apart an amazing symbiosis consisting of two bacteria, one bacteriophage, and seven different genomes all within a single-celled alga. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode •Join the MicrobeTV Discord server •A single crowded cryptomonad cell (Curr Biol) •Letters
TWiEVO 93: Faster than a speeding bacteria
Nels and Vincent review a collision of synthetic biology and experimental evolution, using a minimal synthetic bacterial cell with only 473 genes, the smallest genome of any known organism that can be grown in lab culture. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode •Join the MicrobeTV Disco
TWiEVO 92: There's algae in the jar
Nels and Vincent explain a study of how interspecies competition between two algae influences evolution of metabolism and size. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode •Join the MicrobeTV Discord server • Metabolic evolution during competition (Curr Biol) Science Picks Nels – How amino a
TWiEVO 91: Meet your very distant cousins
Nels and Vincent discuss new findings using phylogenetic approaches about how complex eukaryotic cells emerged from prokaryotic ancestors, which firmly place eukaryotes as a clade nested within the Asgard archaea. Hosts: Nels Elde and Vincent RacanielloS Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode •Join the MicrobeTV Discord serve
TWiEVO 90: The mystery of the mouse mummies
Nels and Vincent provide insights into the mystery of mouse mummies on the summits of >6000 m Andean volcanoes, including whether they were living there and if so why? Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode •Join the MicrobeTV Discord server •Mystery of mouse mummies (bioRxiv) Science
TWiEVO 89: On the outer rim of tumor evolution
Nels and Vincent discuss the observation that cells on a boundary of a solid tumor have higher growth rates compared to those in the center and how to model this difference using genome sequencing data. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode •Join the MicrobeTV Discord server •Evolutio
TWiEVO 88: Dog days of evolution in the shadows of Chernobyl
Nels and Vincent review a study of the dogs of Chernobyl which reveals that genetically distinct populations with different amounts of western breed contributions to their genomes, the first step in assessing the effects of exposure to long-term ionizing radiation. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links
TWiEVO 87: Nathan Clark's revolutionary hair care advice
Nathan joins Nels and Vincent to discuss his approach to understanding how species adopt novel traits to overcome challenges, and its application to identifying coding and noncoding sequence changes that underlie mammalian hairlessness. Hosts: Nels Elde and Vincent Racaniello Guest: Nathan Clark Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this
TWiEVO 86: Pulling out the stops in genetic code evolution
Nels and Vincent discuss how evolution of changes in stop codon assignment might occur, and a novel mechanism for altering the meaning of translation stop codons discovered in a trypanosomatid with the apropos name, Blastocrithidia nonstop. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode •Join t
TWiEVO 85: Teaching old dogs new genetic tricks
Nels and Vincent discuss the use of genome sequence data for over 4,000 domestic, semi-feral, and wild canids to understand the genetic drivers of canine behavior. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Genetic drivers of canine diversification (Cell) Time stamps by Jolene. Thanks! Sci
TWiEVO 84: Decoding our defenses to the Black Death
Nels and Vincent review the use of ancient DNA to identify loci that may have been under selection during the Black Death by studying populations before, during, and after the pandemic. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Evolution of immune genes associated with Black Death (Nature
TWiEVO 83: Evolution spreads its wings (and then loses them)
Florian Maderspacher from Current Biology joins Nels and Vincent to discuss a special issue of the journal on birds. Hosts: Nels Elde and Vincent Racaniello Guest: Florian Maderspacher Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Current Biology Birds Special Issue Scott Edwards bikes across the US (Audubon) Support Diversity Iss
TWiEVO 82: A genetic hack for the human brain
Nels and Vincent consider evidence that a single amino acid change in the TKTL1 gene might have led to greater neurogenesis in the frontal cortex of modern humans compared with Neanderthals. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Human TKTL1 implies greater neurogenesis (Science) Every
TWiEVO 81: Evolution's new and improved slime molds
Nels and Vincent discuss how duplication of a gene encoding a transcription factor led to evolution of a novel cell type in the slime mold Dictyostelium. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Gene duplication leads to novel cell type (Current Biol) Evolution of multicellularity (TWiE
TWiEVO 80: Viruses of a feather bottleneck together
Louise Moncla joins Nels and Vincent to review her use of genomics to understand emergence, evolution, and transmission of respiratory viruses including influenza virus H5N1, mumps virus, and SARS-CoV-2. Hosts: Nels Elde and Vincent Racaniello Guest: Louise Moncla Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Within-host diversity
TWiEVO 79: When the immune system is away, SARS-CoV-2 will play
Nels and Vincent discuss an analysis of the drivers of evolution of SARS-CoV-2 during chronic infections, indicating that a tradeoff exists between antibody evasion and fitness. Hosts: Nels Elde and Vincent Racaniello Click arrow to play Download TWiEVO 79 (103 MB .mp3, 86 min) Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode SARS-Co
TWiEVO 78: The virus daily double
Nels and Vincent provide an update on cases of monkeypox, and summarize a biochemical view of three changes in the SARS-CoV-2 spike protein that may balance positive and negative selection. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode ECDC monkeypox risk assessment (pdf) Monkeypox virus geno
TWiEVO 77: The mutations of our lives
Alex joins Nels and Vincent to discuss his work which demonstrates that somatic mutation rates scale with lifespan in mammals. Hosts: Nels Elde and Vincent Racaniello Guest: Alex Cagan Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Somatic mutation and age (Nature) Zombie gene in elephants (TWiEVO 26) Time stamps by Jolene. Thanks!
TWiEVO 76: One-step symbiosis
Nels and Vincent describe how a single amino acid change can allow E. coli to replace the essential gut symbiont of the stinkbug Plautia stali. Hosts: Nels Elde and Vincent Racaniello Click arrow to play Download TWiEVO 75 (103 MB .mp3, 86 min) Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Making E. coli an insect mutualist (bioRx
TWiEVO 75: Even the BANAL coronaviruses are interesting
Nels and Vincent review isolation of SARS-CoV-2-like viruses from bats in Laos that can replicate in human cells. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode SARS-CoV-2 like viruses in bats in Laos (Nature) Vampire vax (TWiV 809) Time stamps by Jolene. Thanks! Science Picks Nels – Erich Ja
TWiEVO 74: On racism, not race with Joe Graves
Joe Graves joins Nels and Vincent to discuss his career in evolutionary biology and his recent book that answers questions about race and racism. Hosts: Nels Elde and Vincent Racaniello Guest: Joe Graves Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode On Racism, Not Race (Amazon) African Americans in evolutionary science (Behav Eco
TWiEVO 73: With a little help from your hosts
Nels and Vincent review three aspects of SARS-CoV-2: phylogenetics of Omicron, a two-step fitness selection for variants, and putative RNA insertions from host genomes. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Two-step fitness selection for SARS-CoV-2 variants (Cell Rep) Host origins of SARS-CoV
TWiEVO 72: Echoes of evolution both shallow and deep
Nels and Vincent discuss evolutionary evidence for an epidemic of coronavirus infection over 20,000 years ago in East Asia, and reconstruction of the membrane differences between bacteria and Archaea reveals unexpected differences in permeability. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Ancien
TWiEVO 71: Faster than a speeding coronavirus
Nels and Vincent explain a method to calculate the mutation rate of SARS-CoV-2, and the role of a single amino acid change in spike in enhancing fitness of the delta variant and enabling it to out-compete the alpha variant. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode SARS-CoV-2 mutation rate (Geno
TWiEVO 70: On Life's Edge with Carl Zimmer
Carl Zimmer joins Nels to talk about science writing, science communication, viruses, and his new book, On Life's Edge. Host: Nels Elde Guest: Carl Zimmer Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode On Life's Edge by Carl Zimmer Time stamps by Jolene. Thanks! Science Picks Nels – Remembrance of Dick Lewontin Carl – From telomere to tel
TWiEVO 69: Swimming in SARS-CoV-2 sequences
Nels and Vincent discuss the identification of novel bat coronaviruses that shed light on the evolution of SARS-CoV-2, dating the first cases of COVID-19 to mid-November 2019, and recovery of deleted genome sequences from early in the Wuhan outbreak. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Iden
TWiEVO 68: Stepping through time with SARS-CoV-2
Nels and Vincent explain a new method for calculating the most recent common ancestor of SARS-CoV-2, which concludes that the ancestral virus was circulating in October/November 2019, before its first detection in China. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Evolutionary portrait of SARS-CoV
TWiVEO 67: Corona chameleon
Nels and Vincent review evidence for recombinant SARS-CoV-2 genomes arising in the B.1.1.7 lineage within the United Kingdom. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Recombination in B.1.1.7 lineage (Virological) CoVariants Letters read on TWiEVO 67 Time stamps by Jolene. Thanks! Science Pick
TWiEVO 66: SARS-2-mouse
Nels and Vincent review a preprint demonstrating that changes in the genomes of the SARS-CoV-2 variants B1.351 and P.1 allow the viruses to reproduce in mouse cells in culture and in laboratory mice. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Tony Schountz on TWiV 668 SARS-CoV-2 variants infect mi
TWiEVO 65: Variants in the mist
Nels and Vincent review evidence that a single amino acid change in the SARS-CoV-2 spike protein has driven adaptation to humans, followed by an update on the status of variants of concern. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Selective sweep drove SARS-CoV-2 adaptation (bioRxiv) Novel coron
TWiEVO 64: Seeing the lineages for the variants
Nels and Vincent consider evolution of antibody immunity to SARS-CoV-2, and update the situation on novel virus variants of concern with potentially altered fitness and reactivity with antibodies. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Evolution of SARS-CoV-2 antibodies (Nature) mRNA vaccine-e
TWiEVO 63: Year of the coronavirus
Nels and Vincent wrap up 2020 with a discussion of novel variants of SARS-CoV-2 that have emerged in the United Kingdom and South Africa, how to interpret the rapidly emerging genome sequence data and what to look for in the coming weeks as these variants spread across the globe. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiE
TWiEVO 62: Army ants with Daniel Kronauer
Daniel joins Nels and Vincent to discuss his new book on army ants, the wickedest insects ever to roam the planet, and his research on them and clonal raider ants. Hosts: Nels Elde and Vincent Racaniello Guest: Daniel Kronauer Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode This Week in Ants (TWiEVO 13) Raiders of the Lost Orco (TWiEVO 18)
TWiEVO 61: Shot and chaser of SARS-CoV-2 evolution
Nels and Vincent discuss an opinion piece on 12 evolutionary insights into how the COVID-19 pandemic is shaping human nature, and prolonged SARS-CoV-2 reproduction in an immunosuppressed patient. Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Microbe.TV on instagram Pandemic exposes human nature (PNAS) Carl Bergstrom calls BS (Twitter) Prol
TWiEVO 60: Five years of TWiEVO on the future of our past
On the fifth anniversary of TWiEVO, Nels and Vincent invite 12 evolutionary biologists to describe exciting future directions for the field and their laboratory in the next five years. Hosts: Nels Elde and Vincent Racaniello Guests: Lillian Fritz Laylin, Talia Karasov, Andrew Kern, Sarah Tishkoff, Dmitri Petrov, Nancy Chen, Amanda Larracuente, John McCutcheon, Ambika Kamath, Chip Aquadro, Rebekah
TWiEVO 59: The hypothesis giving tree
Nels and Vincent answer listener questions and discuss a newly discovered virus of amoeba with a nearly complete ORFan genome: none of the proteins encoded in the viral genome look like any other proteins. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Yaravirus (PNAS) Letters read on TWiEVO 59 Time s
TWiEVO 58: Not all coronaviruses ACE2 the test
Simon and Heather join TWiEVO to discuss their analysis of the evolutionary history of ACE2 usage by coronaviruses in the Sarbecovirus genus. Hosts: Nels Elde and Vincent Racaniello Guests: Simon Anthony and Heather Wells Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Evolutionary history of sarbecovirus ACE2 binding (bioRxiv) Bombali virus
TWiEVO 57: SARS-CoV-2 receptor binding evolution blooms
Jessie, Allie and Tyler join Nels and Vincent to describe their work on deep mutational scanning of the SARS-CoV-2 receptor binding domain. Hosts: Nels Elde and Vincent Racaniello Guests: Jesse Bloom, Allie Greaney, and Tyler Starr Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Links for this episode Bloom Laboratory Deep mutational scanning of SARS-CoV-2 RBD (bi
TWiEVO 56: Revising the drafts of coronavirus evolution
Nels and Vincent continue their discussion of SARS-CoV-2 evolution, including understanding recurrent mutations in the viral genome, and the potential for re-emergence of the virus from an animal reservoir. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO SARS-CoV-2 genomic diversity (Inf, Genet, Evol) Re-emergence of SARS-C
TWiEVO 55: Coronavirus evolution from soup to nuts
Nels and Vincent continue their discussion of SARS-CoV-2 evolution, with a report that the coronavirus proofreading enzyme stimulates RNA recombination, and debunking the conclusion that a change in the viral spike glycoprotein is associated with increased human to human transmission. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of T
TWiEVO 54: Rough drafts of SARS-CoV-2 science
Nels and Vincent continue their discussion of SARS-CoV-2 from an evolutionary viewpoint, including function of the furin cleavage site, whether Vervet cells are an informative system, another bat isolate, and a nomenclature to assist genomic epidemiology. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO SARS-CoV-2 in Vero cell
TWiEVO 53: Virus evolution by land and by sea and by CoV, part II
Nels and Vincent continue their discussion of SARS-CoV-2 from an evolutionary viewpoint, focusing on what the genome sequences tell us about the virus. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Clement Chow with COVID-19 (Salt Lake Trib) Scientists exposed to coronavirus (Nature) CoV by Britt Glaunsinger (YouTube) Gene
TWiEVO 52: Virus evolution by land and by sea and by CoV
Nels and Vincent examine SARS-CoV-2 from an evolutionary viewpoint, examining what the spike glycoprotein sequence informs us about the origin of the virus. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Distinct CoV name needed (Lancet) Proximal origin of SARS-COV-2 (virological) CoV spillovers not rare (Goats and Soda) S
TWiEVO 51: The starting point paradox
Nels and Vincent dive deep into evolution and consider how new proteins emerged billions of years ago, when there were no other proteins to serve as starting material. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Primordial emergence of a nucleic acid binding protein (bioRxiv) Tawfik laboratory Image credit Letters read o
TWiEVO 50: I'm dreaming of a Y chromosome
Nels and Vincent discuss signatures of sex chromosome evolution revealed by assembly of a young vertebrate Y chromosome from 3-spined stickleback fish. Hosts: Nels Elde and Vincent Racaniello Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Assembly of a young vertebrate Y chromosome (bioRxiv) Image credit Letters read on TWiEVO 50 Time stamps by Jolene. Thanks! S
TWiEVO 49: A giant podcast on giant viruses
Rich joins Nels and Vincent for a debriefing on the 4th Ringberg Symposium on Giant Virus Biology in Tegernsee, Germany. Hosts: Nels Elde and Vincent Racaniello Guest: Rich Condit Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiEVO Endless giant virus forms most beautiful (TWiV 575) 4th Ringberg Giant Virus Meeting Program (pdf) Photographs by Matthias Fischer Time s
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