Biology – Quantitative Biology – Populations and Evolution
Scientific paper
2010-07-02
Biology
Quantitative Biology
Populations and Evolution
Scientific paper
Gene duplications are one of major primary driving forces for evolutionary novelty. We took population genetics models of genes duplicate to study how evolutionary forces acting during the fixation of mutant allele at duplicate loci. We study the fixation time of mutant allele at duplicate loci under double null recessive model (DNR) and haploinsufficient model (HI). And we also investigate how selection coefficients with other evolutionary force influence the fixation frequency of mutant allele at duplicate loci. Our results suggest that the selection plays a role in the evolutionary fate of duplicate genes, and tight linkage would help the mutant allele preserved at duplicate loci. Our theoretical simulation agree with the genomics data analysis result well, that selection, rather than drift, plays a important role in the establishment of duplicate loci, and recombination have a great opportunity to be acted upon selection.
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