Dear colleagues,

this week's Biology Thursday seminar, 19th Nov, 12:15 (zoom link below),

will be given by Dr. Simone Immler, University of East Anglia, UK, on "Haploid gametic selection in animals and its evolutionary consequences"

Biphasic life cycles with alternating diploid and haploid gametic phases are a traits shared by all sexually reproducing eukaryotes. Selection occurring during - even a short - haploid gametic phase may have substantial consequences for a wide range of biological processes including adaptation, inbreeding depression and sex chromosome evolution. While in plants, selection in haploid gametes is well established, in animals, the idea has remained largely untested. This is somewhat surprising given that particularly male gametes (sperm) are generally produced in large numbers but only few fertilise an egg offering an ideal opportunity for selection to act upon. We tested for selection on the haploid sperm genome in the zebrafish combining selection experiments with transcriptome and genome sequencing. We found clear evidence that the haploid sperm genome is more than just a silenced genome and selection at this stage has major fitness consequences for the following generations.

See also: https://simoneimmler.com/about/

See you online on Thursday,

have a nice week, Heikki

PS. There are still seminar slots open before Christmas - if you have suggestions for speakers let me know! I'm also starting to compile the program for the spring semester as well - all suggestions appreciated!

Heikki Helanterä is inviting you to a scheduled Zoom meeting.

Topic: Biology Thursday seminar Time: This is a recurring meeting Meet anytime

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=============================================== Heikki Helanterä Associate Professor (tenure track) Ekologian ja genetiikan tutkimusyksikkö / Ecology and Genetics Research Unit Oulun Yliopisto / University of Oulu / Finland heikki.helantera@oulu.fimailto:heikki.helantera@oulu.fi +358-40-7507 334