Karyotypes are generally conserved between closely related species and large
chromosome rearrangements typically have negative fitness consequences in …

The rateof divergence for Z or X chromosomes is usually observed to be greater than
autosomes, but the proposed evolutionary causes for this pattern vary, as do empirical …

Two new skipper butterfly (Hesperiidae) species are described from the United States:
Staphylus floridus Grishin, sp. n.(type locality in Florida, Volusia Co.) and Staphylus ecos …

Sex chromosomes play an outsized role in adaptation and speciation, and thus deserve
particular attention in evolutionary genomics. In particular, fusions between sex …

The faster-Z/X hypothesis predicts that sex-linked genes should diverge faster than
autosomal genes. However, studies across different lineages have shown mixed support for …

Sex chromosome evolution is a complex sub-field of population genetics with unresolved
questions about how quickly and adaptively these chromosomes should evolve compared to …

Sperm are among the most variable cells in nature. Some of this variation results from
nonadaptive errors in spermatogenesis, but many species consistently produce multiple …

Many species that are extensively studied in the laboratory are less well characterized in
their natural habitat, and laboratory strains represent only a small fraction of the variation in …

Identifying the genetic mechanisms that underlie phenotypic responses to natural
environments is one of the greatest challenges in modern biological research (NSF 2011; …

Most studies of sex-biased genes explore their evolution in familiar chromosomal sex
determination systems, leaving the evolution of sex differences under alternative …