【在 s******y 的大作中提到】 : The hair color is lighter in child. It will grow darker when he grow up
R*e
10 楼
how do you know the mother is homozygous for black hair? what if she is heterozygous. Actually, the skin or hair color is not determined by a single gene but more than 1 gene. For instance, hair color of mouse are determined mainly by 5 loci.