Johnson R C, Schwitters S Y, Cole R E, Ahern F M, Au K
Behav Genet. 1981 Jul;11(4):369-72. doi: 10.1007/BF01070818.
Survey data from 38 families consisting of both parents and at least one biological offspring provided no support for the belief that lactose tolerance resulted from having at least one dominant gene on an autosomal gene pair and did not support the belief that Caucasians are more frequently tolerant of lactose than are persons of Oriental or of mixed Caucasian-Oriental ancestry.
来自38个由父母双方和至少一个亲生孩子组成的家庭的调查数据,并不支持乳糖耐受性是由常染色体基因对中至少一个显性基因导致的这一观点,也不支持白种人比东方人或白种人与东方人混血的人更耐受乳糖这一观点。