A.90%,10% B.65%,35% C.50%,50% D.35%,65%
A.2/3 B.1/12 C.1/4 D.1/6
下列系譜圖中,6號(hào)無患病基因,7號(hào)和8號(hào)婚后生一兩病兼發(fā)男孩的概率是()
A.1/48 B.1/24 C.1/16 D.無法確定