Estimating the time to the whole-genome duplication and the duration of concerted evolution via gene conversion in yeast.
A maximum-likelihood (ML) method is developed to estimate the duration of concerted evolution and the time to the whole-genome duplication (WGD) event in baker's yeast (Saccharomyces cerevisiae). The models with concerted evolution fit the data significantly better than the molecular clock model, indicating a crucial role of concerted evolution via gene conversion after gene duplication in yeast. Our ML estimate of the time to the WGD is nearly identical to the time to the speciation event between S. cerevisiae and Kluyveromyces waltii, suggesting that the WGD occurred in very early stages after speciation or the WGD might have been involved in the speciation event.
Sugino
Ryuichi P
RP
Human Genetics Center, School of Public Health, Unversity of Texas Health Science Center, Houston 77030, USA.
Innan
Hideki
H
D000465:Algorithms; D019143:Evolution, Molecular; D005785:Gene Conversion / Q000235:genetics*; D020440:Gene Duplication; D016681:Genome, Fungal; D007716:Kluyveromyces / Q000235:genetics; D016013:Likelihood Functions; D008957:Models, Genetic; D010802:Phylogeny; D012441:Saccharomyces cerevisiae / Q000235:genetics*; D013997:Time Factors