问题
选择题
－What about______party you went to yesterday evening?
－Oh, it was boring, you know, party like that!
A．the; a
B．a; the
C．the; /
D．the; the
答案
答案：A
搜题请搜索小程序“爱下问搜题”
－What about______party you went to yesterday evening?
－Oh, it was boring, you know, party like that!
A．the; a
B．a; the
C．the; /
D．the; the
答案：A
在一大群牛中间，对3个连续分布的性状加以测量，计算方差，如下表所示：
| 方差类型 | 性状 | ||
| 胫长 | 脖长 | 脂肪含量 | |
| 表型方差 | 310.2 | 730.4 | 106.0 |
| 环境方差 | 248.1 | 292.2 | 53.0 |
| 可加性遗传方差 | 46.5 | 73.0 | 42.4 |
| 显性遗传方差 | 15.6 | 365.2 | 10.6 |