An evolutionary advantage of haploidy in large yeast populations - PubMed (original) (raw)
. 2003 Jan 24;299(5606):555-8.
doi: 10.1126/science.1078417.
Affiliations
- PMID: 12543972
- DOI: 10.1126/science.1078417
An evolutionary advantage of haploidy in large yeast populations
Clifford Zeyl et al. Science. 2003.
Abstract
Although seed plants and multicellular animals are predominantly diploid, the prominence of diploidy varies greatly among eukaryote life cycles, and no general evolutionary advantage of diploidy has been demonstrated. By doubling the copy number of each gene, diploidy may increase the rate at which adaptive mutations are produced. However, models suggest that this does not necessarily accelerate adaptation by diploid populations. We tested model predictions regarding rates of adaptation using asexual yeast populations. Adaptive mutations were on average partially recessive. As predicted, diploidy slowed adaptation by large populations but not by small populations.
Comment in
- Evolution. Haploid superiority.
Greig D, Travisano M. Greig D, et al. Science. 2003 Jan 24;299(5606):524-5. doi: 10.1126/science.1081275. Science. 2003. PMID: 12543960 No abstract available.
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