从性遗传又称性控遗传,是指相同基因型在不同的性别中表达不同的表现型的现象。它与伴性遗传的区别是,控制从性遗传的基因——从性基因,一般位于常染色体,而不是性染色体上。人的秃顶的遗传方式是从性遗传的典型例子。【典例分析】例1.在某种牛中,基因型为AA个体的体色是红褐色,aa是红色,基因型为Aa的个体中雄牛是红褐色,而雌牛则为红色。一头红褐色 From sexual inheritance, also known as sex control inheritance, refers to the same genotype in different sex expression of different phenotype phenomenon. What distinguishes it from sex-linked inheritance is the control of genetically inherited genes - from sex genes, usually on autosomal and not on sex chromosomes. Human baldness is a typical example of sexual inheritance. Example Analysis 1. In a cow, the body color of AA individuals is reddish-brown, aa is red, and for individuals with genotype Aa, the male is reddish-brown and the female is red. A red-brown