1-Oct-2026
Study: #SexChromosomes drive how bodies deal with #cancer, #heart health and #longevity
New research shows that X and Y chromosomes drive risk of #diseases, including cancer, independent of hormones. Understanding these mechanisms could drive sex-aware #medicine
#sexchromosomes — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #sexchromosomes, aggregated by home.social.
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Woman had her twin brother's XY chromosomes — but only in her blood. Her skin cell karyotype was XX. Doctors identified her condition as chimerism, in which the body contains at least two different sets of DNA across different cells. #sexchromosomes
https://buff.ly/TDgdKlo -
Hundreds of genes act differently in the brains of men and women
#Science #Brain #Genetics #Neuroscience #BrainResearch #MenAndWomen #Biology #Health #SexChromosomes #Alzheimers #Parkinsons #Male #Female #Woman #Man #HumanBrain #SexDifferences
https://the-14.com/hundreds-of-genes-act-differently-in-the-brains-of-men-and-women/ -
Okuno et al. assemble male genomes for three spiny rat species, tracing Y chromosome loss and gene translocation. Authors show that segmental duplications and rearrangements enabled preservation of Y-linked genes on the X.
🔗 doi.org/10.1093/molbev/msaf102
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Men can lose their Y chromosome in some cells and it makes them more prone to illness?!?
Still new things to learn.
From new scientist 3 may 2025
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Let me tell you 'bout the birds and the bees and the octopuses:
3-Feb-2025
#Octopuses have some of the oldest known #sexChromosomes
New research at the UO shows they’ve been using one that’s been around for 480 million yearshttps://www.eurekalert.org/news-releases/1072206 #science #evolution #chromosomes #genome #sexDetermination #cephalopods
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8-Jan-2025
A nearly gapless #genome sequence of the #echidna, an egg-laying mammal with multiple #sexChromosomes, helps researchers to track genomic reorganization events that gave rise to a highly unusual #sexDetermination system.
related to the system of the #platypus which was the cover story in my book "Der Kuss des Schnabeltiers" / "The birds, the bees, and the platypuses." 15 years later I can't remember how that worked but I loved the story.
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30-JUL-2024
#Platypus and chicken reveal how chromosomes balance between the sexeshttps://www.eurekalert.org/news-releases/1053015
#science #evolution #SexChromosomes #birds #SexDetermination #monotremes
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Sex- and cell-type-specific regulation on #SexChromosomes. @kweiosis &co take advantage the young sex chromosomes of #Drosophila miranda to explore how ex-autosomes acquire sex chromosome-specific regulatory programs #PLOSBiology https://plos.io/4bdrwlu
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11-JAN-2024
First prehistoric person with Turner syndrome (ie only X rather than XX or XY) identified from #ancientDNAhttps://www.eurekalert.org/news-releases/1030707 #science #genetics #genome #SexChromosomes
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Sex Unfolded Jacques Monod Conference. Third Edition in incredibly sunny Roscoff. Already 1 week ago. Thanks to all the participants! Many new ideas for the #evolutionofsex #recombination, #SexChromosomes #asexuality #evobio #popgen. 4th edition in 5 years by @KarineDoninck and Sylvain Glémin !
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Beyond X and Y: #Fish have different methods of sex determination https://oceanbites.org/beyond-x-and-y-fish-have-different-methods-of-sex-determination/
Rapid turnover and #evolution of sex-determining regions in Sebastes #rockfishes https://onlinelibrary.wiley.com/doi/10.1111/mec.17090
"Some fish even change sex partway through their adult life, based on size or age! Closely related species of fish often have different #SexChromosomes or lack clear sex #chromosomes altogether, indicating that #SexDetermination evolves quickly and is highly variable."
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Wow! This is so cool!
"We demonstrate that incomplete transcriptional dosage compensation of sex chromosomes is balanced by post-transcriptional compensation in platypus and chicken."
#SexChromosomes #DosageCompensation #DosageBalance #Science #Research #Biology #Genomics #Platypus #Chicken
https://www.biorxiv.org/content/10.1101/2023.02.23.529605v1.abstract -
Very nice overview by @jfmclaughlin92 et al of the complexity of concepts of "sex" in animals, at both #genetic and #phenotypic levels. #EvolutionaryBiology #SexChromosomes #ecoevo #zoology
https://ecoevo.social/@jfmclaughlin92/109779136788347129 -
Nice special issue on sex chromosome evolution https://onlinelibrary.wiley.com/toc/14209101/2022/35/12
including "X chromosomes show relaxed selection and complete somatic dosage compensation across Timema stick insect species" by Parker et al @KamilSJaron (other authors not on :mastodon:)
#EvolutionaryBiology #SexChromosomes @dee_unil