Das A, Singh B N
Genetics Laboratory, Centre of Advanced Study in Zoology, Banaras Hindu University, Varanasi, India.
Genome. 1991 Aug;34(4):618-25. doi: 10.1139/g91-094.
To study the genetic differentiation and inversion clines in Indian natural populations of Drosophila melanogaster, 14 natural populations (6 from the north and 8 from the south) were screened for chromosome inversions. The chromosomal analysis revealed the presence of 23 paracentric inversions, which include 4 common cosmopolitan, 4 rare cosmopolitan, 2 recurrent endemic, and 13 unique endemic (new inversions detected for the first time) inversions. The difference in karyotype frequencies between populations from the north and south were highly significant and the level of inversion heterozygosity was higher in populations from the south. Statistically significant negative correlations were found between each of the four common cosmopolitan inversions and latitude. These findings are in accord with results from other worldwide geographic regions and show that Indian populations of D. melanogaster have undergone considerable genetic differentiation at the level of inversion polymorphism.
为了研究印度黑腹果蝇自然种群的遗传分化和倒位渐变群，对14个自然种群（6个来自北方，8个来自南方）进行了染色体倒位筛选。染色体分析显示存在23种臂内倒位，其中包括4种常见的世界性倒位、4种罕见的世界性倒位、2种反复出现的地方性倒位和13种独特的地方性倒位（首次检测到的新倒位）。北方和南方种群之间的核型频率差异非常显著，南方种群的倒位杂合度水平更高。在四种常见的世界性倒位中的每一种与纬度之间都发现了具有统计学意义的负相关。这些发现与其他全球地理区域的结果一致，表明印度黑腹果蝇种群在倒位多态性水平上经历了相当大的遗传分化。
