未分类题
In Figure 2 on page 55, among all the children and grandchildren of the male and female at generation 1, how many have the disease?
A.Three
B.Four
C.Six
D.It
B.
【参考答案】
B
Figure 2 shows a total of nine children and grandchild......
(↓↓↓ 点击下方‘点击查看答案’看完整答案 ↓↓↓)