题目

Dear Sir and Madam，Many kids hardly do any housework at home. ______ don't let the kids help them. They think the kids are too ______ and they can't do housework well. ______ it's completely different in my home. I don't like doing chores. But I have ______ choice but to do it because doing chores is a rule in my family. When I come back from school, my mom ______ says, “Could you take out the rubbish？” or “Could you help me with cooking？” I know she's just trying to make me more independent and ______ me how to take care of myself. But ______ does she make me do all the housewor对基因显隐性的叙述错误的是 [　　] A．显性基因控制显性性状 B．显性基因对隐性基因有掩盖作用 C．成对基因Dd存在时只表现显性性状 D．在杂种子一代中表现不出来的性状是显性性状