@andrejpaleo.bsky.socialA new study by Andrii Rozhok, Niles Eldredge, and James DeGregori which presents a novel population genetic mechanism of evolution—the directional selection (of deviating forms) also selects, as a dynamic spandrel, higher mutation rate forms!
🧪 #Paleobio #EvoBio
doi.org/10.1093/jeb/...
@molbioevol.bsky.socialLaumer, @prashantpsharma.bsky.social et al. examined the incidence of Pax family genes across chelicerate phylogeny and interrogated the expression and function of Pax2 and Pax6 homologs in the daddy-longlegs Phalangium opilio.
@molbioevol.bsky.socialAguado et al. investigate the salivary proline-rich protein gene family across 27 primate species to test whether dietary ecology has shaped the evolution of this locus.
@andrejpaleo.bsky.social'Phylogenetic jungle' of early ecomorphologically diverse actinopretygians:
"Early actinopterygians are a paraphyletic assemblage of ~600 extinct species divided between ~22 named clades and the “palaeoniscoids,” a..wastebasket"
onlinelibrary.wiley.com/doi/epdf/10....
🧪⚒️ #Geology #Paleobio #EvoBio
@molbioevol.bsky.social@pavelpayne.bsky.social et al. show that bacterial herd immunity can promote homologous recombination, suggesting bacterial immune systems can shape molecular evolution not only by blocking infection but also by regulating genetic exchange
@marshall0i.bsky.socialWithout assuming a background in philosophy of biology or evolutionary theory, @bufordrat.bsky.social and I discussed ideas from my book Evolution and the Machinery of Chance (from @uchicagopress.bsky.social) on his Elucidations podcast.
🌱🐋 #evobio elucidations.vercel.app/posts/episod...
@molbioevol.bsky.socialThe October 2026 issue of MBE has launched - check in throughout the month for your regular dose of discoveries, methods, protocols, and reviews in molecular evolution.
@alejandrofabregastejeda.com
@theramseylab.bsky.socialIt is widely held that fitness is affected by population size, 'n.' But Grant Ramsey shows, in a new #openaccess paper in @jrnlofphil.bsky.social, that this familiar claim rests on both mathematical and conceptual mistakes.🔥
@molbioevol.bsky.socialHeenkenda et al. inferred a population history of the rhesus macaque with substantial structure between Chinese and Indian populations, with a split time of ∼140k generations ago from an ancestral pop. of ∼65k individuals
@albertchristian.bsky.socialA new preprint w/ @landismj.bsky.social that I’m excited to share! We develop a theoretical framework linking evolutionary scenarios to mathematical constraints on parameters that produce given stationary frequencies in state-dependent speciation-extinction models. We call these “rulesets.” #EvoBio
@andrejpaleo.bsky.socialGreat to see this paper on the importance of higher-order interactions in sustaining organization across scales published! Thank you @svalver.bsky.social for leading the effort in which I've been a small part. The paper:
www.sciencedirect.com/science/arti...
🧪 #Complexity #EvoBio #Macroecology
@theramseylab.bsky.socialAre you interested in the past, present & future of Artificial Life (ALife) as a scientific field?
🚨 We are hosting an interdisciplinary minisymposium this December, so send us your work & come along! Please share widely!
@andrejpaleo.bsky.socialDynamical [chemical] systems view on the emergence of heredity in evolution:
"This paper proposes that early chemical systems could preserve and pass on differences through stable chemical states rather than through stored sequences like DNA or RNA"
www.pnas.org/doi/10.1073/...
🧪 #Complexity #EvoBio
@andrejpaleo.bsky.socialIf we call a modern species poor deeply diverging lineage or "depauperon" (as it is dubbed in the article) the "basal" lineage, then we should admit that the hominids including humans are the "basal" stock for Old World monkey. Right? 😉
academic.oup.com/sysbio/advan...
🧪 #Paleobio #EvoBio
@andrejpaleo.bsky.social@andrejpaleo.bsky.socialInteresting article on the geophysical and geodynamic constraints of the Early Earth in the Hadean on the origins and persistence of the RNA organisms:
"...frequent global sterilization events persisted up until about 4.4 Ga..."
www.nature.com/articles/s41...
🧪⚒️ #Geology #Paleobio #EvoBio
@andrejpaleo.bsky.socialLooks liek a promissing general approach for the choice of characters (in this application -- the genomic ones). Complexity approach on improving the phylogenetic inference with highlighting highly heterogenous regions of the genome.
www.biorxiv.org/content/10.6...
🧪 #EvoBio #Paleobio
@andrejpaleo.bsky.socialJust a reminder, that birds had 1.6 times more history before the K-Pg impact than the duration of the Cenozoic Era.
My bet would be that we are severely underestimating Mesozoic diversity of birds (stem or crown).
www.tandfonline.com/doi/epdf/10....
🧪⚒️ #Geology #EvoBio #Paleobio
@clocksevolution.bsky.social