The unit of adaptation is usually thought to be a gene or set of interacting genes, rather than
the whole genome, and this may be true of species differentiation. Defining species on the …

A study was conducted to investigate the factors which affect postmating, genetic exchange
and hybrid sterility among closely related species. Drosophila species were used in the …

We compare the utility of two methods for estimating the average levels of gene flow from
DNA sequence data. One method is based on estimating FST from frequencies at …

A central goal of evolutionary biology is to identify the genes and evolutionary forces that
cause speciation, the emergence of reproductive isolation between populations. Despite the …

In nature, closely related species may hybridize while still retaining their distinctive identities.
Chromosomal regions that experience reduced recombination in hybrids, such as within …

The divergence of Drosophila pseudoobscura and close relatives D. persimilis and D.
pseudoobscura bogotana has been studied using comparative DNA sequence data from …

Chromosomal inversions impact genetic variation and facilitate speciation in part by
reducing recombination in heterokaryotypes. We generated multiple whole-genome shotgun …

One of the most influential observations in molecular evolution has been a strong
association between regional recombination rate and amount of nucleotide polymorphism in …

Bifurcating phylogenies are frequently used to describe the evolutionary history of groups of
related species. However, simple bifurcating models may poorly represent the evolutionary …

In Escherichia coli, Saccharomyces cerevisiae, and Drosophila melanogaster, codon bias
may be maintained by a balance among mutation pressure, genetic drift, and natural …