·子一代基因A的频率 p=D+1/2H=0.49+1/2(0.21+0.21) =0.7 q=R+1/2H=0.09+1/2(0.21+0.21) =0.3• 子一代基因A的频率 p = D +1/2H =0.49＋1/2（0.21＋0.21） =0.7 q =R +1/2H =0.09+1/2（0.21＋0.21） =0.3