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  Mate choice among yeast gametes can purge deleterious mutations

Tazzyman, S. J., Seymour, R. M., Ponmiankowski, A., & Greig, D. (2012). Mate choice among yeast gametes can purge deleterious mutations. Journal of Evolutionary Biology, 25(8), 1463-1471. doi:10.1111/j.1420-9101.2012.02539.x.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D35A-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-3B05-6
Genre: Journal Article

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TAZZYMAN_et_al-2012-Journal_of_Evolutionary_Biology.pdf (Publisher version), 289KB
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TAZZYMAN_et_al-2012-Journal_of_Evolutionary_Biology.pdf
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 Creators:
Tazzyman, S. J., Author
Seymour, R. M., Author
Ponmiankowski, A., Author
Greig, D.1, Author              
Affiliations:
1Max-Planck Research Group Experimental Evolution, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445640              

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Free keywords: Saccharomyces; automixis; gamete choice; intratetrad mating; mate choice; mate preference; sexual selection
 Abstract: Meiosis in Saccharomyces yeast produces four haploid gametes that usually fuse with each other, an extreme form of self-fertilization among the products of a single meiosis known as automixis. The gametes signal to each other with sex pheromone. Better-quality gametes produce stronger signals and are preferred as mates. We suggest that the function of this signalling system is to enable mate choice among the four gametes from a single meiosis and so to promote the clearance of deleterious mutations. To support this claim, we construct a mathematical model that shows that signalling during automixis (i) improves the long-term fitness of a yeast colony and (ii) lowers its mutational load. We also show that the benefit to signalling is greater with larger numbers of segregating mutations

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Language(s): eng - English
 Dates: 2012-08
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: eDoc: 610658
DOI: 10.1111/j.1420-9101.2012.02539.x
Other: 2923/S 39268
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Title: Journal of Evolutionary Biology
  Alternative Title : J. Evol. Biol.
Source Genre: Journal
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Pages: - Volume / Issue: 25 (8) Sequence Number: - Start / End Page: 1463 - 1471 Identifier: ISSN: 1010-061X (print)
ISSN: 1420-9101 (online)