The role of natural selection in genetic differentiation of worldwide populations of Drosophila ananassae.

ABSTRACT: The main evolutionary forces leading to genetic differentiation between populations are generally considered to be natural selection, random genetic drift, and limited migration. However, little empirical evidence exists to help explain the extent, mechanism, and relative role of these forces. In this study, we make use of the differential migration behavior of genes located in regions of low and high recombination to infer the role and demographic distribution of natural selection in Drosophila ananassae. Sequence data were obtained from 13 populations, representing almost the entire range of cosmopolitan D. ananassae. The pattern of variation at a 5.1-kb fragment of the furrowed gene, located in a region of very low recombination, appears strikingly different from that of 10 noncoding DN

SUBMITTER: Baines JF 

PROVIDER: S-EPMC1448739 | biostudies-literature | 2004 Dec

REPOSITORIES: biostudies-literature