This Week in Evolution

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 read on TWiEVO 94 Science Picks Nels – What happened at NIH during the last government shutdown Vincent – Geneticist J. Craig Venter: 'I consider retirement tantamount to death' Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv

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 Discord server • Evolution of a minimal cell (Nature) Science Picks Nels – Life magnified stamp collection Vincent – Matters Microbial Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv

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 acids got their names (Source) Vincent – EVs Fix One Pollution Problem—And Worsen Another Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv

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 server •Heimdallarchaeial ancestry of eukaryotes (Nature) Science Picks Nels – Juneteenth issue of Cell – collection of essays from black and brown scientists Vincent – Tara Oceans Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv

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 Picks Nels – Zoonomia Vincent – SeaPhages Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv

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 •Evolutionary models of solid tumor growth (Nat Ecol Evol) Science Picks Nels – TWiV 1000 Vincent – The dream of wiping out polio might need a rethink Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv

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 for this episode •Join the MicrobeTV Discord server •The dogs of Chernobyl (Science Adv) •What the dogs of Chernobyl can teach us (Stat) •Letters read on TWiEVO 88 Science Picks Nels – Hellbent documentary and Insufficient evidence for natural selection associated with the Black Death Vincent – BioRender Listener Pick Walter – Oded Rechavi and interview Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv

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 episode •Join the MicrobeTV Discord server •Gene loss in marine mammals (TWiEVO 34) •Gene change underlying mammalian hair loss (eLife) •Letters read on TWiEVO 87 Science Picks Nels – Local news coverage of Amanda, Maria, and Nathan's paper Vincent – Discovering Retroviruses by Anna Marie Skalka Nathan – Genomics of Secondarily Temperate Adaptation in the Only Non-Antarctic Icefish Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv

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 the MicrobeTV Discord server •Novel stop codon reassignment mechanisms (Nature) Science Picks Nels – Protein Synthesis: An epic on the cellular level Vincent – Widespread stop-codon recoding in bacteriophages may regulate translation of lytic genes discussed on TWiM 277 Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv

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! Science Picks Nels – Ghosts of Science Past Still Haunt Us by C. Brandon Ogbunu Vincent – The Biggest Ideas in the Universe by Sean Carroll Music on TWiEVO is performed by Trampled by Turtles Send your evolution questions and comments to twievo@microbe.tv