Singh B N, Das A
Genetics Laboratory, Centre of Advanced Study in Zoology, Banaras Hindu University, Varanasi, India.
J Hered. 1992 May-Jun;83(3):227-30. doi: 10.1093/oxfordjournals.jhered.a111199.
Chromosomal analysis of eight Indian natural populations (six from north India and two from south India) of Drosophila melanogaster revealed the presence of 13 paracentric inversions, including one in the X chromosome. All four types of inversions--common cosmopolitan (4), rare cosmopolitan (3), recurrent endemic (2), and unique endemic (4)--were detected. The frequency of commonly occurring inversions and the level of inversion heterozygosity were found to be higher in the two southern populations. The south Indian populations are genetically more differentiated than those from the north. Also, latitudinal clines in the frequencies of the four common cosmopolitan inversions were detected. These results provide further evidence for the existence of inversion clines in Indian populations of D. melanogaster.
对八个印度黑腹果蝇自然种群（六个来自印度北部，两个来自印度南部）进行的染色体分析显示，存在13种臂内倒位，其中一种位于X染色体上。检测到了所有四种类型的倒位——常见世界性倒位（4种）、罕见世界性倒位（3种）、反复出现的地方性倒位（2种）和独特的地方性倒位（4种）。发现两种南部种群中常见倒位的频率和倒位杂合度水平更高。印度南部种群在遗传上比北部种群差异更大。此外，还检测到四种常见世界性倒位频率的纬度渐变。这些结果为印度黑腹果蝇种群中倒位渐变的存在提供了进一步的证据。
