Homogeneity of common cosmopolitan inversion frequencies in Southeast Asian Drosophila melanogaster

Journal of genetics

Aparup Das1 2¹  Sascha Glinka¹  Wolfgang Stephan¹ 

[1] the observed pattern simply reflects the retention of ancestral polymorphisms originating from a panmictic population that was once present on a large single landmass (Sundaland), and/or is a consequence of high recent gene flow between populations; and$$

关键词: Drosophila melanogaster;    inversion polymorphism;    Southeast Asia;    genetic homogeneity;    balancing selection.;   

DOI  :  

学科分类：生物科学（综合）

来源: Indian Academy of Sciences

【 摘 要 】

East Asian Drosophila melanogaster are known for great variation in morphological and physiological characters among populations, variation that is believed to be maintained by genetic drift. To understand the genetic properties of Asian D. melanogaster populations, we initiated a population genetic study of chromosome inversion polymorphisms in hitherto unanalysed population samples from Southeast (SE) Asia. We generally found a high frequency of each of the four common cosmopolitan inversions in comparison to populations from Africa, Asia, and Australia. In contrast to the great phenotypic variation among Asian populations, however, we could not detect differences in inversion frequencies among populations. Furthermore, we observed neither correlations of inversion frequencies with population latitude and longitude, nor evidence for linkage disequilibrium between different inversion loci. We propose two explanations for the observed genetic homogeneity among these SE Asian D. melanogaster populations:the observed pattern simply reflects the retention of ancestral polymorphisms originating from a panmictic population that was once present on a large single landmass (Sundaland), and/or is a consequence of high recent gene flow between populations; and

【 授权许可】

Unknown