问题
选择题
在一对相对性状的遗传实验中，下列叙述正确的是[ ]
A．纯合体测交，F1代不发生性状分离
B．纯合体自交，F1代发生性状分离
C．杂合体测交，F1代不发生性状分离
D．杂合体自交，F1代不发生性状分离
答案
答案：A
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在一对相对性状的遗传实验中，下列叙述正确的是[ ]
A．纯合体测交，F1代不发生性状分离
B．纯合体自交，F1代发生性状分离
C．杂合体测交，F1代不发生性状分离
D．杂合体自交，F1代不发生性状分离
答案：A
| 从Ⅱ组句子中找出I栏的答句，将其序号填入题前括号内。 |
| I ( ) 1. What are you going to buy? ( ) 2. When are you going to the park? ( ) 3. Are you going to the Science Museum next week? ( ) 4. What is your mother going to do this afternoon? ( ) 5. Does Amy go to school by bike? | Ⅱ A. Yes. I am. B. Yes, she does. C. I'm going to buy a comic book. D. I'm going to the park next Saturday. E. She is going to clean the kitchen. |