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Jeffrey Vedanayagam

@antisense.bsky.social
401 followers 391 following 26 posts

Assistant Professor at University of Texas at San Antonio. Study evolution/regulation of selfish genes. Manage two labs. Research lab🔬🧪🧬🖥️ with some ease but the other lab 🐶🐾 is un-manageable! www.anti-sense.org

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Reposted by Jeffrey Vedanayagam
Kelly Dawe @corncolors.bsky.social · 9h
The UGA Genetics Department is hiring! Please help spread the word. We have an opening for an Associate Professor/Professor in Genetics, Synthetic Biology, and Biological Engineering. See ad for details – and join us here in Athens, GA!
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Reposted by Jeffrey Vedanayagam
Soni Lacefield @lacefieldlab.bsky.social · 21/08/2026
Excited to share this review that @needhibhalla.bsky.social and I wrote on meiotic checkpoints! www.annualreviews.org/content/jour...
annualreviews.org
Tuning Meiotic Checkpoints: Evolutionary Costs and Mechanistic Trade-Offs
In this review, we discuss three meiotic checkpoints—the DNA damage response, the pachytene checkpoint, and the spindle checkpoint—and highlight their similarities and differences across diverse syste...
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Reposted by Jeffrey Vedanayagam
André Marques @amarques.bsky.social · 16/09/2026
Out today in Nature: sex without crossovers. Rhynchospora tenuis makes pollen, fertilises and sets seed, yet 0 crossovers in 10,997 pollen nuclei. Chromosome drive and ~87% seed abortion rebuild the mother's genotype, so the offspring are clones. doi.org/10.1038/s415...
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Maurine Neiman @maurineneiman.bsky.social · 03/09/2026
Terrific article in @quantamagazine.org about polyploidy and featuring our snails, along with some amazing other scientists! ❤️🐌🧬 www.quantamagazine.org/genome-dupli... @johnlogsdon.bsky.social @chelseahiggins.bsky.social @kylemcelroy.bsky.social @peterdfields.bsky.social @jsharbro.bsky.social
quantamagazine.org
Genome Duplication Is a Radical Evolutionary Gamble | Quanta Magazine
By doubling their entire genome, organisms can evolve extremely rapidly — or they can lose it all. New studies reveal how to survive the high-risk, high-reward evolutionary event.
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Peter Andersen @germline.bsky.social · 02/09/2026
Finally - the 🧵! So, the piRNA pathway defends the animal germline from transposons. But most of what we know comes from narrow developmental windows like late oogenesis, where it's easiest to study. We asked if the pathway is the same across development. It is not! /+
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Reposted by Jeffrey Vedanayagam
Genetics Society of America @genetics-gsa.bsky.social · 01/09/2026
🪰 A new study in #GENETICS demonstrates how the Stellate meiotic drive system in #Drosophila is active in contemporary populations, revealing its evolutionary significance. 🔗 buff.ly/UqEQJrQ
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Peter Andersen @germline.bsky.social · 29/08/2026
We watched piRNAs and transposons across development, saw them dance tightly and wrote a paper about it. It's so cool to see it online and we will make a thread about it all very soon. Stay tuned :-)
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Reposted by Jeffrey Vedanayagam
Nature Reviews Genetics @natrevgenet.nature.com · 18/08/2026
ICYMI: New online! Genetics and genomics of hybridization
dlvr.it
Genetics and genomics of hybridization
Nature Reviews Genetics, Published online: 11 August 2026; doi:10.1038/s41576-026-00995-7Hybridization, the exchange of genes between divergent lineages, is now recognized as widespread across eukaryotes and essential to understanding genome evolution. In this Review, Schumer and Rieseberg overview methodological advances facilitating recent progress, reassess the frequency, causes and consequences of hybridization, and highlight key open questions.
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Reposted by Jeffrey Vedanayagam
PLOS Biology @plosbiology.org · 25/08/2026
What are the genetic mechanisms for the #evolution of novel traits? This study by @brhopkins92.bsky.social &co links #Drosophila sex comb teeth to expression changes within ancestral cells, leading to diverged metabolic/developmental rates, and a novel structure. 🧪 #AcademicSky plos.io/4gQOnZK
Graphical abstract on the gain of a novel trait in Drosophila. The teeth of the recently evolved, male-specific Drosophila sex comb evolved from a more ancient organ, the mechanosensory bristle. We show that changes in the expression of genes that are shared between mechanosensory bristle and sex comb teeth cells lead to changes in a variety of fundamental cellular processes that together enable the morphological transformation.

The photo, phylogeny, general design are those of the corresponding author(s). They made the bristle schematics in biorender and the fly silhouette is their modified drawing of D. melanogaster from SciDraw (https://doi.org/10.5281/zenodo.3925939).
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Susanne Bornelöv @susbo.bsky.social · 22/08/2026
Delighted and very proud to see our study (and Anna-Maria's first first-author paper) recently out in PNAS: www.pnas.org/doi/10.1073/... @cambiochem.bsky.social @cruk-ci.bsky.social 1/5
pnas.org
Lifestyles of Gypsy-family transposons shape their regulatory mechanisms | PNAS
Transposable elements (TEs) are a highly diverse group of selfish genomic elements, prevalent across the tree of life, whose uncontrolled propagati...
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Reposted by Jeffrey Vedanayagam
Di Jiang @dijiang319.bsky.social · 30/07/2026
Why is the X chromosome rich in L1 mobile elements? @science.org X-chromosome inactivation draws L1 mutagenesis to the human X chromosome | Science www.science.org/doi/10.1126/...
science.org
X-chromosome inactivation draws L1 mutagenesis to the human X chromosome
X-chromosome inactivation (XCI) enables gene dosage compensation in XX eutherians. Long interspersed element-1 (LINE-1 or L1) retrotransposons are unusually abundant on the human X chromosome and are ...
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Ian Henderson @hendersi.bsky.social · 25/07/2026
CRISPR-mediated centromere fission generates neochromosomes with distorted meiotic inheritance in Arabidopsis biorxiv.org/content/10.6... new preprint from us - includes changing the Arabidopsis karyotype from 5 -> 6 chromosomes using Cas9 & outcomes of 5/6 chromosome hybrid meiosis
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Peiwei Chen @peiwei-chen.bsky.social · 17/07/2026
How do transposons jump when they’re released from host control? I babysat two chromosomes for 2 years, making sure they are ok without most piRNAs. Here’s what we found & excited to share my 1st postdoc paper: “piRNA loss unleashes episodic transposition bursts” www.biorxiv.org/content/10.6...
biorxiv.org
piRNA loss unleashes episodic transposition bursts
In Metazoa, transposon expression is suppressed by the piRNA pathway, and disruption of this pathway leads to rampant transposon expression. However, it remains unclear whether increased transposon ex...
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Reposted by Jeffrey Vedanayagam
Emília Santos @emiliapsantos.bsky.social · 14/07/2026
🎨 job alert 🐠 Come join us! We have two positions open! These are part of our @erc.europa.eu funded project on the mechanisms underpinning convergence of colour patterns in cichlid fishes! Closing date: 16th August. Postdoc: www.cam.ac.uk/jobs/researc... Technician: www.cam.ac.uk/jobs/researc...
static.klipy.com
Callipterus Cichlid Collecting Shell
ALT: Callipterus Cichlid Collecting Shell
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Dr. Arun Sethuraman @arunsethuraman.bsky.social · 11/07/2026
Hey team - it’s looking very likely that I’ll be hiring not one but two four year postdocs! We’re a fun lab with tons of theoretical and applied pop gen projects - broadly in polyploid, conservation, and human evo. Competitive salary, sunny San Diego! Do share with your about to defend grads!
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Society for Molecular Biology and Evolution @official-smbe.bsky.social · 12/06/2026
#SMBE2026 S24: Molecular mechanisms of selfish elements and strategies 🗓️ Mon Jun 29, 10:20am 🔗 smbe2026.org/programme Talks by: @levine-lab.bsky.social Yu Hua @cecilecourret.bsky.social @eleanoreritter.bsky.social Elli Cryan @alexand-kwak.bsky.social Steve Perlman @antisense.bsky.social
SMBE2026 | S24: Molecular mechanisms of selfish elements and strategies
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Reposted by Jeffrey Vedanayagam
KamilSJaron.bsky.social @kamilsjaron.bsky.social · 05/06/2026
A big preprint from my group! Muller Elements are considered to be conserved in flies. We tested it by reconstructing the ancestral dipteran karyotype using 340 chromosomal genomes and suprise suprise, they're not... Led by @juliagries.bsky.social and Sam Ebdon. www.biorxiv.org/content/10.6... 🧵👇
Schema of three major chromosomal rearrangements leading to Muller Elements of Drosophila melanogaster since the common ancestor of Diptera.
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Charikleia Karageorgiou (Clio) @evobioclio.bsky.social · 15/08/2025
Our latest preprint explores the evolution of the primate amylase locus, uncovering structural innovations, regulatory shifts and molecular convergence. www.biorxiv.org/content/10.1...
biorxiv.org
Convergent evolution through independent rearrangements in the primate amylase locus
Structurally complex regions of the genome are increasingly recognized as engines of evolutionary convergence due to their propensity to generate recurrent gene duplications that give rise to similar ...
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Reposted by Jeffrey Vedanayagam
Charles Mullon @charlesmullon.bsky.social · 21/05/2026
New paper with the brilliant @ewanflintham.bsky.social How fast does recombination suppression evolve among sex chromosomes? We show that even weak sexual antagonism (so hard to detect) makes this fast, often via inversions fixing on X/Z depending on mating system: doi.org/10.1093/evle...
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Ipsita Agarwal @ipsitaagarwal.bsky.social · 20/05/2026
I am delighted to share new work with Simon Myers (www.biorxiv.org/content/10.6...), on how genetic variants that influence binding patterns of PRDM9 and slow down the repair of meiotic double-strand breaks impact mammalian spermatogenesis and fertility. 1/n
biorxiv.org
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Mart Krupovic @mkrupovic.bsky.social · 22/04/2026
"The selfish ribosome" paper is now published in @plosbiology.org . Have a look! Many thanks to the editors and reviewers! doi.org/10.1371/jour...
journals.plos.org
The selfish ribosome
In this Essay, the evolution of life is construed as a ribosomal takeover, whereby the ribosome evolved to consume most of the cell’s resources, while other cellular componentry ensured the propagatio...
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Nature Methods @natmethods.nature.com · 06/04/2026
longcallR: Long-read RNA sequencing achieves accurate SNP calling, haplotype phasing and allele-specific expression analysis. www.nature.com/articles/s41...
nature.com
SNP calling, haplotype phasing and allele-specific analysis with long RNA-seq reads - Nature Methods
In this study, long-read RNA sequencing achieves accurate single-nucleotide polymorphism calling, haplotype phasing and allele-specific expression analysis.
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Max-Planck-Gesellschaft @maxplanck.de · 04/04/2026
Not all #eggs are the same: birds‘ eggs have an incredible range of different sizes, colors, patterns and shapes. 🪺 🤩 Happy #Easter, everyone!
Bird eggs with different sizes, colors, patterns and shapes.
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Dr. Skylar Grayson @skylargrayson.bsky.social · 04/04/2026
NASA just dropped this image of Artemis II astronaut Christina Koch looking back at us. The first woman to ever see our planet in its entirety. I’m not crying you’re crying 🥹🔭🧪 📸: NASA
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Genetics Society of America @genetics-gsa.bsky.social · 02/04/2026
🎉 Congrats to 2026 Thomas Hunt Morgan Medal recipient Judith Kimble of @uwbiochem.bsky.social! Her work has built an entire field and inspired generations of scientists through her mentorship and leadership. 🔗Read more: buff.ly/0yzHXvk
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Anjali Hinch @anjalihinch.bsky.social · 31/03/2026
Meiosis faces a fundamental problem: It must repair hundreds of DNA double-strand breaks while executing a transcriptional programme essential for gamete development. But many of these breaks occur in genes. So how are these two processes reconciled? www.biorxiv.org/content/10.6...
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Arnaud Krebs @arnaudkr.bsky.social · 24/03/2026
Want to know how histone marks regulate your favorite gene? Go single molecule with ChromSMF: integrated measure of chromatin accessibility and histone marks + DNA methylation, TF footprints and genotype for free! Very proud of @mpalamin.bsky.social ! @embl.org
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Adam Phillippy @aphillippy.bsky.social · 23/03/2026
Recently amplified gene arrays are a super interesting phenomenon, but many still resist our attempts to assemble them. @dantipov.bsky.social has developed a new method (Trivial Tangle Traverser) that resolves assembly graph tangles caused by such sequences (1/4) www.biorxiv.org/content/10.6...
biorxiv.org
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MRC Laboratory of Molecular Biology @mrclmb.ac.uk · 18/03/2026
How do primordial germ cells (PGCs) migrate across a developing embryo? #LMBResearch from Katharine Goodwin and Kate McDole (@cellbiol-mrclmb.bsky.social) uncovers the mechanisms PGCs use in mouse embryos to navigate this long and surprisingly risky journey. Read more: mrclmb.ac.uk/news-events/...
Microscopic view of a glowing, irregularly shaped primordial germ cell with long protrusions with purple and green fluorescence against a dark blue background.
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Martin Steinegger 🇺🇦 @martinsteinegger.bsky.social · 17/03/2026
AlphaFold database has entered the era of complexes. Together with NVIDIA, DeepMind and EBI, we use ColabFold, OpenFold and MMseqs2-GPU to predict ~31 million complexes (homo & hetro-dimers) resulting in 1.8 million high-quality predictions 📄 research.nvidia.com/labs/dbr/ass... 🌐 alphafold.ebi.ac.uk
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BWJones @bwjones.bsky.social · 16/03/2026
This is kinda bonkers. In addition, 20 amino acids were found on Ryugu, along with uracil and vitamin B3. These have been found in other instances, but since the samples from Ryugu were collected directly from the asteroid and delivered in sealed capsules, contamination on Earth could be ruled out.
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Albert Heck @hecklab.bsky.social · 15/03/2026
Deep coverage and extended sequence reads obtained with a single archaeal protease expedite de novo protein sequencing by mass spectrometry: Cell Systems www.cell.com/cell-systems.... How great would it be to sequence proteins without a gene-template! We might be approaching this soon.
cell.com
Deep coverage and extended sequence reads obtained with a single archaeal protease expedite de novo protein sequencing by mass spectrometry
Highly efficient hyperthermal acidic proteases combined with hybrid-fragmentation schemes provide five times more unique peptide reads than trypsin or chymotrypsin, greatly boosting confidence in de n...
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Ben Hopkins @brhopkins92.bsky.social · 06/03/2026
Quick plug for our new resource, the Drosophila Species Stock Exchange. This is a database and mailing list that documents species currently in culture and the labs holding them. If you want to know more or sign up then please get in touch. See attached for more info and please share!
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Nature Reviews Genetics @natrevgenet.nature.com · 10/03/2026
FYI: New online! Annotating genomes at increased scale and resolution
dlvr.it
Annotating genomes at increased scale and resolution
Nature Reviews Genetics, Published online: 17 February 2026; doi:10.1038/s41576-026-00937-3In this Review, Ji et al. overview how rapidly advancing experimental and computational methods are enabling improved and automated annotation of gene structure and function, providing researchers with genome annotation resources of unprecedented scale and resolution.
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bioRxiv Evolutionary Biology @biorxiv-evobio.bsky.social · 10/03/2026
Pervasive positive selection on X-linked ampliconic genes in primates www.biorxiv.org/content/10.64898/20…
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Chris Hassall @katatrepsis.bsky.social · 09/03/2026
Very excited to announce that we are hiring for three faculty positions at @universityofleeds.bsky.social in @bioscienceleeds.bsky.social: A/Prof Plant Science, A/Prof Animal Biology and Lecturer in Ecology, Zoology, Biodiversity or Ecosystem Management. Please do get in touch to chat. Links below:
jobs.leeds.ac.uk
Job Opportunity at University of Leeds: Associate Professor of Plant Science
Associate Professor of Plant Science Salary: Grade 9 (£61,759 - £73,708 p.a, depending on experience)This role will be based on the university campus, with scope for elements of the job to be undertak...
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Science Magazine @science.org · 28/02/2026
In a new Science study, researchers report on transcriptional adaptation, a dual feedback and feedforward mechanism that uses genetic redundancy to compensate for mutations in protein-coding genes. Learn more in a new #SciencePerspective: scim.ag/4ryeXtN
scim.ag
Keeping cells fit
Fragments of aberrant cytoplasmic mRNA pair with nuclear RNAs to augment transcription
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Jun Ishigohoka @junishigohoka.bsky.social · 27/02/2026
www.sciencedirect.com/science/arti...
sciencedirect.com
Strain variation identifies a neural substrate for behavioral evolution in Drosophila
Sexual selection acts on heritable differences within species, driving the parallel diversification of signal production in one sex and behavioral res…
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Nature Biotechnology @natbiotech.nature.com · 27/02/2026
Considerations for the future of in vitro gametogenesis in fertility care - @hannahlandecker.bsky.social @uclacrshe.bsky.social @uclamcdb.bsky.social @uclastemcell.bsky.social go.nature.com/4l2e9en
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Simon Fisher @profsimonfisher.bsky.social · 26/02/2026
Many living people carry fragments of Neanderthal DNA, remnants of ancient interbreeding events, with uneven distribution across chromosomes. New work by @sarahtishkoff.bsky.social lab suggests patterns are most consistent with Neanderthal contribution to human populations being highly male biased.🧪
science.org
Interbreeding between Neanderthals and modern humans was strongly sex biased
Sex biases in admixture and other demographic processes are recurrent features throughout human evolution. For admixture between Neanderthals and anatomically modern humans (AMHs), sex bias has been p...
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Margarida Cardoso Moreira @margaridamcm.bsky.social · 25/02/2026
Our internal organs are evolutionary marvels. New technologies are transforming our understanding of the evolution of vertebrate organs. You can find more by reading here: rdcu.be/e5EgU #EvoBio #EvoDevo 🐟🦎🐢🦇🐊🦜
rdcu.be
The molecular evolution of vertebrate organs
Nature Ecology & Evolution - This Review discusses recent advances in the molecular evolution of vertebrate organs, including rates of evolution of organs and cell types, molecular mechanisms...
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Gavin Woodruff @weirdworms.bsky.social · 23/02/2026
Pangenome analysis reveals families of ubiquitin-ligase adaptors as key genomic divergence drivers that lead to hybrid incompatibility genome.cshlp.org/content/earl...
genome.cshlp.org
Pangenome analysis reveals families of ubiquitin-ligase adaptors as key genomic divergence drivers that lead to hybrid incompatibility
An international, peer-reviewed genome sciences journal featuring outstanding original research that offers novel insights into the biology of all organisms
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The New York Review of Books @nybooks.com · 21/02/2026
Long before Darwin, the French polymath comte de Buffon “accepted both that species could become extinct and that they could change, and he even entertained the idea that humans and apes…might have had a common ancestry.” —Ian Tattersall
nybooks.com
Call Me by Your Names | Ian Tattersall
The quest to fathom the riotous diversity of nature is absorbingly told in a virtual double biography of the great taxonomist Carl Linnaeus and his contemporary, the count of Buffon.
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PLOS Biology @plosbiology.org · 19/02/2026
The #fly community aims to achieve a comprehensive genomic study of the Drosophilidae family. @pankajd.bsky.social @bernardkim.bsky.social @petrovadmitri.bsky.social @darrenobbard.bsky.social present a comparative gene annotation for 301 #Drosophilidae species @plosbiology.org 🧪 plos.io/4c3pyrI
Time-calibrated phylogeny of the family Drosophilidae showing major species groups, surrounded by representative adult flies that highlight the remarkable morphological diversity of this model insect group. The composite image was created using Microsoft PowerPoint. Fly photographs were taken by Darren J. Obbard and are published under the Creative Commons Attribution License with permission.
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Royal Society Publishing @royalsocietypublishing.org · 19/02/2026
This new #RSOS study examines the heritability of cognitive and behavioural traits in a pedigreed population of assistance #dogs. Read more: doi.org/10.1098/rsos... @ggnanadesikan.bsky.social @dremilybray.bsky.social @marinawatowich.bsky.social @smacklab.bsky.social
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Nature Reviews Genetics @natrevgenet.nature.com · 17/02/2026
New online! Annotating genomes at increased scale and resolution
dlvr.it
Annotating genomes at increased scale and resolution
Nature Reviews Genetics, Published online: 17 February 2026; doi:10.1038/s41576-026-00937-3In this Review, Ji et al. overview how rapidly advancing experimental and computational methods are enabling improved and automated annotation of gene structure and function, providing researchers with genome annotation resources of unprecedented scale and resolution.
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Theresa Kim, PhD, MS @tyk314.net · 30/01/2026
🧵Good news out of #NIH today. (1) NIH is extending #ESI and #K99/R00 eligibility to accommodate researchers whose eligibility would have ended during the previous shutdown. Take a look at NOT-OD-26-020. If your ESI status would have ended in 2025, you get an automatic extension through 2026/03/31.
grants.nih.gov
NOT-OD-26-020: Notice of Temporary Extension to Early-Stage Investigator (ESI) Eligibility Period
NIH Funding Opportunities and Notices in the NIH Guide for Grants and Contracts: Notice of Temporary Extension to Early-Stage Investigator (ESI) Eligibility Period NOT-OD-26-020. OD
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Nature Reviews Genetics @natrevgenet.nature.com · 16/02/2026
New online! Evolutionary causes and consequences of gene duplication
dlvr.it
Evolutionary causes and consequences of gene duplication
Nature Reviews Genetics, Published online: 16 February 2026; doi:10.1038/s41576-026-00935-5Gene duplication is a key evolutionary mechanism, as initially redundant paralogues diverge over time. The authors review how adaptive and non-adaptive forces influence the evolutionary fates of gene duplicates, highlighting the importance of function–fitness relationships and gene expression dynamics.
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Dominik Handler @86dominik.bsky.social · 13/02/2026
How does the piRNA pathway solve the self vs. non-self problem? 🧬 Since piRNAs come from single-stranded RNA, how does the cell choose the right ones? For years, "piRNA clusters" were seen as THE privileged source. But are they really special and earmarked for biogenesis? (1/19)
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Jeffrey Vedanayagam @antisense.bsky.social · 03/02/2026
We have an opening for a Research Associate in my group. This is an excellent position for recent graduates or students with a master's seeking research experience prior to graduate/medical school. Apply via the job portal (Job ID: 14797). DM for queries. www.utsa.edu/people-excel...
utsa.edu
Staff Positions
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