Hadjivasiliou, Z;
Pomiankowski, A;
(2019)
Evolution of asymmetric gamete signaling and suppressed recombination at the mating type locus.
bioRxiv: Cold Spring Harbor, NY, USA.
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Abstract
The two partners required for sexual reproduction are rarely the same. This pattern extends to species which lack sexual dimorphism yet possess self-incompatible gametes determined at mating-type regions of suppressed recombination, likely precursors of sex chromosomes. Here we investigate the role of cellular signaling in the evolution of mating-types. We develop a model of ligand-receptor dynamics within cells, and identify factors that determine the capacity of cells to send and receive signals. The model specifies conditions favoring the evolution of gametes producing ligand and receptor asymmetrically and shows how these are affected by recombination. When the recombination rate can evolve, the conditions favoring asymmetric signaling also favor tight linkage of ligand and receptor loci in distinct linkage groups. These results suggest that selection for asymmetric signaling between gametes was the first step in the evolution of non-recombinant mating-type loci, paving the road for the evolution of anisogamy and sexes.
| Type: | Working / discussion paper |
|---|---|
| Title: | Evolution of asymmetric gamete signaling and suppressed recombination at the mating type locus |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1101/518654 |
| Publisher version: | https://doi.org/10.1101/518654 |
| Language: | English |
| Additional information: | The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10080755 |
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