Science. 1983 Jul 29;221(4609):459-62. doi: 10.1126/science.221.4609.459.
A sample of 55 South African cheetahs (Acinonyx jubatus jubatus) from two geographically isolated populations in South Africa were found to be genetically monomorphic at each of 47 allozyme (allelic isozyme) loci. Two-dimensional gel electrophoresis of 155 abundant soluble proteins from cheetah fibroblasts also revealed a low frequency of polymorphism (average heterozygosity, 0.013). Both estimates are dramatically lower than levels of variation reported in other cats and mammals in general. The extreme monomorphism may be a consequence of a demographic contraction of the cheetah (a population bottleneck) in association with a reduced rate of increase in the recent natural history of this endangered species.
对来自南非两个地理位置隔离的种群的 55 头南非猎豹（Acinonyx jubatus jubatus）样本进行的研究发现，在 47 个同工酶（等位基因同工酶）基因座中，每一个都存在遗传同态性。对猎豹成纤维细胞中 155 种丰富可溶性蛋白的二维凝胶电泳也显示出低的多态性频率（平均杂合度为 0.013）。这两个估计值都明显低于其他猫科动物和一般哺乳动物的变异水平。这种极端的同态性可能是猎豹（种群瓶颈）的数量收缩以及这种濒危物种最近的自然历史中增长率降低的结果。
