Jantz R L
Ann Hum Genet. 1976 Nov;40(2):221-4. doi: 10.1111/j.1469-1809.1976.tb00184.x.
The measure of ridge-count diversity, S/square root 10, was computed for a sample of American Whites, American Blacks and African Blacks, and the regression of S/square root 10 on total ridge-count was determined for each group. The shapes of the regression lines differed considerably. The American White curve was very similar to that obtained by Holt in an English sample, while the two Negro curves generally showed lower lower S/square root 10 values for ridge-counts over 80. The American Negro curve was found to behave like a mixture of the White and African Negro curve to a degree approximating to the fraction of White genes in their gene pool. Holt's parent-child data are used to construct a simple test of the hypothesis that that S/square root 10 reflects zygosity in total ridge-count genotypes. The preliminary results support this hypothesis.
针对美国白人、美国黑人和非洲黑人样本，计算了纹嵴数多样性的测量值S/√10，并确定了每组S/√10对总纹嵴数的回归。回归线的形状有很大差异。美国白人的曲线与霍尔特在一个英国样本中得到的曲线非常相似，而两条黑人曲线在纹嵴数超过80时，S/√10值通常较低。发现美国黑人曲线在一定程度上表现得像是白人和非洲黑人曲线的混合，其近似程度与他们基因库中白人基因的比例相符。利用霍尔特的亲子数据构建了一个简单的检验，以验证S/√10反映总纹嵴数基因型的纯合性这一假设。初步结果支持这一假设。
