分子进化与基因组多样性（张亚平）知识库

利用同功酶淀粉凝胶电泳技术检测了来自甘肃摩天岭和陕西秦岭两个地区的19只川金丝猴(Rhinopithecus roxellanae)的44个遗传座位,没有发现多态座位,其平均遗传杂合度为0。这与滇金丝猴(R. bieti)的平均遗传杂合度处于同一水平。结合古地质学的数据推测,川金丝猴如此之低的遗传多样性很可能是由于历史上受到过瓶颈效应的打击,仅有少数种群得以幸存。在这之后,川金丝猴发生了种群扩张,从而形成了现在的地理分布格局。

The blood samples of 19 individuals of Sichuan snub 2 nosed monkey ( Rhinopichecus roxel 2 lana ) from two different geological regions were investigated in this study. All of forty 2 four genetic loci surveyed were monomorphic. Its mean heterozygosity , a measurement of genetic diversity , was zero. Considering the larger size of population and better living state of Sichuan snub 2 nosed monkey than Yunnan snub 2 nosed monkey ( R 1 bieti ) , we inferred that Sichuan snub 2 nosed monkey might have experienced previous bottleneck , and after this , its population recovered. The speculation is also supported by geological data.