Constraint and turnover in sex-biased gene expression in the genus Drosophila.

ABSTRACT: Both genome content and deployment contribute to phenotypic differences between species. Sex is the most important difference between individuals in a species and has long been posited to be rapidly evolving. Indeed, in the Drosophila genus, traits such as sperm length, genitalia, and gonad size are the most obvious differences between species. Comparative analysis of sex-biased expression should deepen our understanding of the relationship between genome content and deployment during evolution. Using existing and newly assembled genomes, we designed species-specific microarrays to examine sex-biased expression of orthologues and species-restricted genes in D. melanogaster, D. simulans, D. yakuba, D. ananassae, D. pseudoobscura, D. virilis and D. mojavensis. We show that averaged sex-biase

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC2386141 | biostudies-literature | 2007 Nov

REPOSITORIES: biostudies-literature