Genomic conflict drives patterns of X-linked population structure in Drosophila neotestacea.

摘要: Intragenomic conflict has the potential to cause widespread changes in patterns of genetic diversity and genome evolution. In this study, we investigate consequences sex-ratio (SR) drive on population X-chromosome Drosophila neotestacea. An SR prevents maturation Y-bearing sperm during male spermatogenesis thus is transmitted ~100% offspring, nearly all which are daughters. Selection rest suppress can be strong, resulting over offspring sex ratio result accumulation multiple loci that necessary for expression drive. We surveyed variation at 12 random X-linked microsatellites across 16 populations D. neotestacea range frequency from 0% 30%. First, every locus was differentiated between wild-type chromosomes, drives structure X-chromosome. Once association with accounted for, differentiation among similar autosomes. Second, within relative heterozygosity reduced an increased prevalence drive, chromosomes higher than expected based its prevalence. The combination relatively high structuring polymorphism suggests because had significant also probably affects tempo evolution D. neotestacea.