问题
单项选择题
将基因型为AaBbCC和AabbCc的向日葵杂交（三对基因分别位于不同对染色体上），后代中纯合子的比例应为（）
A.1/16
B.1/8
C.1/4
D.1/32
答案
参考答案：B
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将基因型为AaBbCC和AabbCc的向日葵杂交（三对基因分别位于不同对染色体上），后代中纯合子的比例应为（）
A.1/16
B.1/8
C.1/4
D.1/32
参考答案：B
When I was small, my mum used to give the family something special for meals — she would make breakfast food for dinner. I still remember one night my mum some bread in front of my dad, something very burnt. I waited to see if anybody noticed. To my surprise, my dad just took his , smiled at my mum and then turned to ask me how my day at school had been. I’ve what I told him that night. I do remember watching him put some butter on that bread. He as usual, every single bit. After dinner, my mum said to my dad for burning the bread. And I never forget what he said, “I burnt bread, dear. It doesn’t matter at all. ” , I went to kiss Dad good night.I asked him if he really liked his bread burnt. He held me in arms and , “Your mum worked very hard all day. She's really . And you see—a bit of burnt food never hurt anyone!” Now I know life is not perfect. is perfect, either. As for me, I often forget birthdays or some other special days. But I’ve learned something over these years. What we really need is the understanding of each other, whether between a husband and wife, a parent and or just between two friends. This is the key to a happy . So don’t get angry if the bread gets burnt. Remember, bread never hurt anyone. Be kind to those around you and a happier life will surely come closer to you.
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