问题描述:
问题解答:
F1 AA:Aa:aa=1:2:1 AA=0.25;Aa=0.5;aa=0.25F2 AA=0.25+0.5*0.25 Aa=0.5*0.5 aa=0.5*0.25+0.25F3 AA=(0.25+0.5*0.25)+(0.5*0.5)*0.25 Aa=0.5*0.5*0.5 aa=(0.5*0.25+0.25)+(0.5*0.5)*0.25F3中,纯合子有两种AA和aa,比例就好算了呵呵,就是7/11