The polygenic and multiple allelic nature of many traits gives a vast potential for variability among hereditary characteristics .

许多特征的多基因本质和复等位本质，使遗传特点中的变异性具有巨大的潜力。

They were able to confirm which pairs of mutants were allelic and which were not by using the heterocaryon test .

他们通过异核体测验可以确定哪些突变型是等位的，哪些是非等位的。