Accumulation of Deleterious Mutations on the Neo-Y Chromosome of Japan Sea Stickleback (Gasterosteus nipponicus)
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Sex Chromosome Turnover Contributes to Genomic Divergence between Incipient Stickleback Species
Sex chromosomes turn over rapidly in some taxonomic groups, where closely related species have different sex chromosomes. Although there are many examples of sex chromosome turnover, we know little about the functional roles of sex chromosome turnover in phenotypic diversification and genomic evolution. The sympatric pair of Japanese threespine stickleback (Gasterosteus aculeatus) provides an e...
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متن کاملOn the accumulation of deleterious mutations during range expansions.
We investigate the effect of spatial range expansions on the evolution of fitness when beneficial and deleterious mutations cosegregate. We perform individual-based simulations of 1D and 2D range expansions and complement them with analytical approximations for the evolution of mean fitness at the edge of the expansion. We find that deleterious mutations accumulate steadily on the wave front du...
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ژورنال
عنوان ژورنال: Journal of Heredity
سال: 2016
ISSN: 0022-1503,1465-7333
DOI: 10.1093/jhered/esw054