题目
题目

AGRI10051_2025_SM2 Exam: Genetics for Agriculture (AGRI10051_2025_SM2)- Requires Respondus LockDown Browser

单项选择题

In a dihybrid cross (Aa;Bb x Aa;Bb) involving two independently assorting genes, what proportion of offspring would be heterozygote at both loci?

选项
A.50%
B.25%
C.75%
D.6.25%
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标准答案
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思路分析
When considering a dihybrid cross AaBb x AaBb, we treat the two gene loci as independently assorting. First, focus on one gene: Aa x Aa yields offspring genotypes with probabilities AA 1/4, Aa 1/2, and aa 1/4. Therefore, the chance of being he......Login to view full explanation

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