Jesper Boman

diempy: fast and reference-free genome polarisation https://www.biorxiv.org/content/10.64898/2026.02.18.706591v1

Epigenomic alterations define lethal CIMP-positive ependymomas of infancy - Nature Although genetically bland, the posterior fossa group A subgroup of ependymomas, found often in infants and associated with poor prognosis, exhibit widespread epigenetic alterations, namely a CpG isla...

TIL that some childhood cancers (especially neurological ones) lack obvious driver mutations and are likely caused by misregulation of epigenetic marks. 🤯

e.g. www.nature.com/articles/nat...

The Map butterfly differs in wing size and color between seasons. We tested how these differences influence body temperature dynamics, revealing potentially optimized thermal performance between seasons. 🦋☀️

The study, led by Dani and Irča, is in preprint version: doi.org/10.64898/202...

Loci constrained under sexually antagonistic selection on a complex life-history trait, body size, drive rapid adaptation when antagonism is relaxed and carry signatures of balancing selection @immonen-lab.bsky.social @milena-trabert.bsky.social Axel Wiberg Philipp Kaufmann doi.org/10.64898/202...

Hybrid female sterility due to cohesin protection errors in mouse oocytes Misregulation of chromosome cohesion during female meiosis serves as a reproductive isolating barrier in mice.

Another announcement! 📣 Our work on hybrid incompatibility in cohesin protection in 🐭oocytes is published!! Congrats Warif El Yakoubi and Eddie Pan!!🎉 We found hybrids with cohesion errors in two distinct genus.
www.science.org/doi/10.1126/...

A blind soil-dwelling beetle described to a new family discovered in Chile.

resjournals.onlinelibrary.wiley.com/doi/10.1111/...

Genomic analyses in Drosophila do not support the classic allopatric model of speciation Abstract. The allopatric model of speciation has dominated our understanding of speciation biology and biogeography since the Modern Synthesis. It is uncon

New paper out: “allopatric” Drosophila species aren’t so allopatric after all. We show that most currently allopatric species pairs probably overlapped in the past and exchanged genes at levels similar to sympatric pairs. @evolletters.bsky.social

doi.org/10.1093/evle... [1/6]

Exploring #PAG33 and San Diego for the first time! If you're interested in knowing more about why bird microchromosomes are so hard to sequence, come by poster 287 this afternoon!

”Together, our results suggest that strong
pairwise incompatibilities are rare, while weak, background-dependent incompatibilities are
widespread and shape fitness and adaptation in hybrid genomes”

Not Just Ne Ne-More: New Applications for SMC from Ecology to Phylogenies Abstract. Genomes contain the mutational footprint of an organism’s evolutionary history, shaped by diverse forces including ecological factors, selective

In a new GBE Review, @david-peede.bsky.social et al. overview the SMC model and extensions, discuss examples of discoveries made with the help of SMC-based inference, and comment on the assumptions, benefits, and drawbacks of various methods.

🔗 doi.org/10.1093/gbe/...

#genome #evolution #compbio

Before 1990 Brimstones (G rhamni, citroenvlinder) would be more abundant in summer than in spring, but this has shifted over time. The only explanation I can think of is that they go into hibernation sooner after appearing in summer, maybe to avoid summer heat. Other ideas welcome. #vlindermaand

Environmental Variation Promotes Convergent Evolution and Rapid Diversification of Wing Shape and Color in Skipper Butterflies Predation is a key driver of speciation and phenotypic diversification, yet how antipredator traits evolve and persist over evolutionary time remains poorly understood. We generated target sequence ca...

In Eudaminae skippers, wing tails and iridescence have evolved many times and are linked to faster diversification — yet these traits are also often lost, revealing a very dynamic, environment-driven butterfly wing evolution. 🦋
doi.org/10.64898/202...

Some butterflies may seem more beautiful than others. And believe it or not, this is influencing their conservation and researchers' interest! - Take this 10-min test to contribute to a research into our perception of butterfly beauty:
www.unveiling.eu/en_US/introd...

Mosaic tri-lineage secondary contact shapes diverse genomic outcomes in darters Abstract. Speciation does not always lead to complete reproductive isolation, which can result in hybrid zones with gene flow. In freshwater fishes, second

I am very excited to share our new paper with my amazing co-authors and mentors @dmacguig.bsky.social @fishgenomes.bsky.social @tjnear.bsky.social . We investigate a secondary contact zone in #darters. track.smtpsendmail.com/9032119/c?p=...

Effects of rescaling forward-in-time population genetic simulations Abstract. Forward-in-time population genetic simulations enable modelling of a wide array of complex evolutionary scenarios. Simulating small genomic regio

Now accepted in Genetics!

academic.oup.com/genetics/adv...

We ask why and when rescaling of forward simulations in population genetics is not accurate. There are some interesting results for people performing simulations with selection.

Estimating the reduction in genetic diversity from background selection under non-equilibrium demography and partial selfing The effect of natural selection on linked sites has been suggested to be a major determinant of genetic diversity. While it is in principle possible to estimate this effect from genome sequence data, ...

@thymelicus.bsky.social entered the growth-with-background-selection challenge to test his new inference method: www.biorxiv.org/content/10.1.... His victory is a powerful vindication of his approach and a wonderful example of competition-based evaluation!

Neo-sex Chromosomes Track the Mitochondrial Phylogeny and Exhibit an Extensive Added Stratum of Recombination Suppression in Honeyeaters (Aves: Meliphagidae) Abstract. Mounting discoveries of avian neo-sex chromosomes are providing opportunities to understand the extent of variation in fundamental aspects of avi

Orzechowski, @scottvedwards.bsky.social et al. integrated cytogenetic data, long-read assemblies, and whole-genome resequencing to test hypotheses of recombination suppression and the phylogenetic distribution of neo-sex chromosomes in honeyeaters.

🔗 doi.org/10.1093/gbe/evaf215

#genome #evolution

📰 Starting this friday with some positive news:

Our publication "Pangenomes as a framework for adaptive radiation, speciation, and adaptation" came out today in the American Journal of Botany!

bsapubs.onlinelibrary.wiley.com/journal/1537...

Time to publish responsibly: DAFNEE, a database of academia-friendly journals in ecology and evolutionary biology Abstract. The current economics of scientific publishing reveal a profound imbalance: academia pays prices far exceeding the actual costs of publication. R

Time to publish responsibly: DAFNEE, a database of academia-friendly journals in ecology and evolutionary biology url: academic.oup.com/jeb/article/...

Admixture in a butterfly species complex creates a genomic mosaic of ancestry with distinct histories for different chromosomes https://www.biorxiv.org/content/10.1101/2025.11.28.691233v1

🧵We just described Vilesida @uu.se, a new ORDER of #sponges potentially linked to the earliest known animal biomarker! 🔬🪸🪼 #MueumofEvolution

doi.org/10.1093/zool...

@zoojlinnsoc.bsky.social
@ieo.es
@ucriverside.bsky.social
@sponbiodiv.bsky.social
@biodiversa.eu

Project Psyche: reference genomes for all Lepidoptera in Europe Project Psyche is a transnational initiative to generate and study chromosome-level reference genomes of all ~11 000 species of Lepidoptera (butterflies and moths) found in Europe. Here, we describe t...

(1/5)Thrilled to announce our paper on #ProjectPsyche is out! 🦋We describe how we’ve generated 1000+ high-quality genomes for European Lepidoptera, providing an unprecedented resource for biodiversity, conservation, and evolutionary research.
#Genomics #Biodiversity
www.cell.com/trends/ecolo...

Investigating the evolution of large meiotic rings of multiple X and Y sex chromosomes in two Leptodactylus frog species (Anura, Leptodactylidae) www.nature.com/articles/s42...

Changing Views on Speciation Our understanding of speciation processes is constantly changing. Two important concepts that have influenced thinking over the long term are the isolation and the genic views of speciation. However,...

Changing Views on Speciation onlinelibrary.wiley.com/doi/10.1111/...

Adenine DNA methylation associated with transcriptionally permissive chromatin is widespread across eukaryotes - Nature Genetics Long-read sequencing in 18 unicellular eukaryotes reveals that 6mA is widespread across eukaryotes and is enriched at transcriptionally permissive regions, which are also marked by H3K4me3.

Out today, our take on 6-methyladenine #6mA evolution in Eukaryotes @natgenet.nature.com. We asked a simple question, is really DNA 6mA common across the eukaryotes? The answer is "yes" if you're a unicellular eukaryote 🦠, not so if you're multicellular 🐝🌱🍄. www.nature.com/articles/s41... 1/9

With 29 sponge genomes included in this integrative phylogenomic study, sponges are once more shown to be sister-species to the rest of the animals...

Available now in @asn-amnat.bsky.social ! Taking on some big-scale natural history: processed >40k @inaturalist.bsky.social images of Monarda fistulosa using computer vision to query for flower presence and phenotype flower color: doi.org/10.1086/739413

One more day to go!

10am Eastern Thursday November 13.
internalconflictsstn.wordpress.com/seminars/

GBE | HJ Muller and the Relationship Between Sex Chromosome Degeneration and the Evolution of Dosage Compensation

B. Charlesworth & D. Charlesworth publish a new Review in GBE examining how suppressed recombination on emerging sex chromosomes can lead to genetic degeneration and how organisms evolve compensation mechanisms, following on HJ Muller's classic work.

🔗 doi.org/10.1093/gbe/...

#genome #evolution