Scientists identify #gene crucial for #male #meiosis during #homologous pairing and #synapsis.

#SRSF1

https://phys.org/news/2023-06-scientists-gene-crucial-male-meiosis.html

Crossovers during #meiosis result from biased resolution of #HollidayJunctions; this study presents genetic evidence that the #nuclease Exo1 promotes meiotic crossing over by protecting DNA nicks from ligation #PLOSBiology https://plos.io/40tKoXN

Crossovers during #meiosis result from biased resolution of #HollidayJunctions; this study presents genetic evidence that the #nuclease Exo1 promotes meiotic crossing over by protecting DNA nicks from ligation #PLOSBiology https://plos.io/40tKoXN

Crossovers during #meiosis result from biased resolution of #HollidayJunctions; this study presents genetic evidence that the #nuclease Exo1 promotes meiotic crossing over by protecting DNA nicks from ligation #PLOSBiology https://plos.io/40tKoXN

It's time to make male masturbation illegal! It's killing babies!

#onanism #GOP #meiosis

An interesting and perhaps timely article I encountered while pondering if there would ever be a desire for a #meiosis specific mastodon instance:
https://runyourown.social

The February issue is online:

https://embopress.org/toc/14693178/2023/24/2…

The cover features work by Quinghua Shi and co-workers showing that the #meiosis arresting #protein M1AP interacts with the ZZS complex and promotes #male meiotic #recombination.

-> https://www.embopress.org/doi/abs/10.15252/embr.202255778

Nice!
Another "uncharacterized" gene (YGL036W) in yeast is now characterized - as encoding a protein (re-named Vir1) that is part of the mRNA m6A methyltransferase complex required during meiosis.

The deletion mutant is defective in meiosis and has zero m6A, just like ime4 deletion.

"Vir1p, the Yeast Homolog of Virilizer, is Required for mRNA m6A Methylation and Meiosis"

#mRNA #m6A #yeast #meiosis

@biorxivpreprint

https://www.biorxiv.org/content/10.1101/2023.02.07.527493v1

RT @todd_macfarlan
I am looking for a staff scientist to join my group at the NIH in Bethesda, Maryland. Competitive salary and benefits, good funding, and terrific colleagues! https://www.training.nih.gov/postdoc_jobs_nih/view/_31/10347/SSPMDB_1192023 #transposons #evolution #meiosis #recombination #retroviruses #development

Gracias #cepave_conicet ,por dar difusión a esta publicación científica
#meiosis #genetica #Chromosome

Cita completa: Sergio Gustavo Rodríguez Gil, Maia Fradkin & América Nitxin Castañeda-Sortibrán @nitxin (2018): Conceptions of meiosis: misunderstandings among university students and errors, Journal of Biological Education, DOI: 10.1080/00219266.2018.1469531
Link del trabajo: https://doi.org/10.1080/00219266.2018.1469531

#meiosis #educacion #cromosoma #chromosome #celldivision #genetics #cytogenetics

Come and egg us on at @ASCBiology #CellBio2022 as @sabrinaghd @Sam__Dunkley and Federica present their posters on cytoskeletal dynamics and chromosome segregation in eggs. #meiosis

#germline #meiosis #parthenogenesis

Well-designed #animations can help #biology students focus on principles and processes rather than relying on rote memorization. @RosieRedfield &co present ‘candymation’ videos that show how and why #mitosis and #meiosis work the way they do #PLOSBiology
https://plos.io/3gi710o

Well-designed #animations can help #biology students focus on principles and processes rather than relying on rote memorization. @RosieRedfield &co present ‘candymation’ videos that show how and why #mitosis and #meiosis work the way they do #PLOSBiology
https://plos.io/3gi710o

Well-designed #animations can help #biology students focus on principles and processes rather than relying on rote memorization. @RosieRedfield &co present ‘candymation’ videos that show how and why #mitosis and #meiosis work the way they do #PLOSBiology
https://plos.io/3gi710o

@BrentToderian There's a really fun biology/philosophy paper (sadly paywalled) arguing that living organisms solved a version of the #gerrymandering problem (of deciding which genes get into the next generation) by evolving fair #meiosis. If a gene cannot reliably know which other genes it'll interact with in various generations, it better try to do good things in all possible situations (= bodies), which is good for the whole organism. https://link.springer.com/article/10.1007/s12041-022-01383-w

#Introduction post: I'm an associate professor of #biology at #KyotoUniversity in Japan, studying #chromosome dynamics during #meiosis in #nematodes especially #Caenorhabditis_elegans. I enjoy #naturalphilosophy, #philosophyofmind, #chess, #linux, and Japanese calligraphy (#書道).

Here are the chromosomes I study — the maternally- and paternally-derived chromosomes have paired along their lengths and are now undergoing recombination. #meiosis4eva

#Introduction post: I'm an associate professor of #biology at #KyotoUniversity, studying #chromosome dynamics during #meiosis in #nematodes especially #Caenorhabditis_elegans. I enjoy #naturalphilosophy, #philosophyofmind, #chess, #linux, and Japanese calligraphy (#書道).

Here are the chromosomes I study — the maternally- and paternally-derived chromosomes have paired along their lengths and are now undergoing recombination.

#introduction

I am Susan & I study how evolutionary trade-offs affect genetic variation in wild and domesticated species. I am a middling-at-best quantitative geneticist who has made a career off of using obscure 1990s linkage mapping softwares and running the odd GWAS.

I head a research group in Edinburgh. We are interested in #recombination #meiosis #chromosomes #sexualconflict #immunity and have worked on 🐏🦌🐦🐟🐖🐂🦄 in 🏴󠁧󠁢󠁳󠁣󠁴󠁿🇫🇮🇳🇴.

Excited to join this new (old) community :mastolove:

#Gamete production by #meiosis is expected to be balanced with even proportion of y-chromosome bearing #sperm (leading to son in #mammal). This new study in #mouse shows that sperm #sexratio can be tweaked in response to sexual competition. #science #biology
📄 Firman et al. (2020) Sperm sex ratio adjustment in a mammal: perceived male competition leads to elevated proportions of female-producing sperm. Biology Letters 16:20190929 http://dx.doi.org/10.1098/rsbl.2019.0929