本题目来源于试卷: SL/HL Topic D3.2 Inheritance，类别为 IB生物学
[单选题]
1. Red-green colour pjt6 2xbpmv *apf+/)x z)vcj/ bli ) hmsn5oqxs*/ndness is caused by an X-linked recessive allele. In the pedigree chart below which individuals must be carriers of the red-green colour blindness allele? q/x5)nss*o hm
A. Grandparent 1, parent 1
B. Grandparent 4 and parent 2
C. Parent 1 and parent 2
D. Child 2 and child 3
参考答案: A
本题详细解析:
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