问题
选择题
真核生物进行有性生殖时，通过减数分裂和随机受精使后代[ ]
A．增加发生基因自由组合的概率
B．继承双亲全部的遗传性状
C．从双亲各获得一半的DNA
D．产生不同于双亲的基因组合
答案
答案：D
搜题请搜索小程序“爱下问搜题”
真核生物进行有性生殖时，通过减数分裂和随机受精使后代[ ]
A．增加发生基因自由组合的概率
B．继承双亲全部的遗传性状
C．从双亲各获得一半的DNA
D．产生不同于双亲的基因组合
答案：D
A funny thing happened to my sister Tina last month. She lives in Japan and teaches English. In Japan, people don’t usually wear their outdoor shoes in the house or in school, and a lot of buildings have places for shoes. So her school ahs a special place for shoes. 小题1: Tina teaches English in the evening. One Friday, she went to school, and she put her shoes in the shoe box—as usual. Then she had an interesting spoken English class with her students. 小题2: But to her surprise, her shoes weren’t in the box. There was only one pair of those there, and they weren’t her hoes! She had to get home in a hurry. 小题3: On Monday, at her next English class, her shoes were in a shopping bag on her desk! There was a note that said, “I’m so sorry. I took your shoes by mistake!” 小题4: Somebody felt a lot of shame!
|