The large X-effect on secondary sexual characters and the genetics of variation in sex comb tooth number in Drosophila subobscura.

ABSTRACT: Genetic studies of secondary sexual traits provide insights into whether and how selection drove their divergence among populations, and these studies often focus on the fraction of variation attributable to genes on the X-chromosome. However, such studies may sometimes misinterpret the amount of variation attributable to the X-chromosome if using only simple reciprocal F₁ crosses, or they may presume sexual selection has affected the observed phenotypic variation. We examined the genetics of a secondary sexual trait, male sex comb size, in Drosophila subobscura. This species bears unusually large sex combs for its species group, and therefore, this trait may be a good candidate for having been affected by natural or sexual selection. We observed significant heritable var

SUBMITTER: Mittleman BE 

PROVIDER: S-EPMC5243774 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature