A.基因突變 B.受精與否 C.環(huán)境作用 D.性染色體分離異常
A.100% B.75% C.50% D.25% E.以上答案均不對(duì)
A.AaBb或Aabb B.AAaBBb或AAabbb C.AaaBbb或Aaabbb D.AAaBBb或AaaBbb