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Two genes .A. and .B. are linked. In a d...

Two genes .A. and .B. are linked. In a dihybrid cross involving these two genes, the `F_1` heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of offspring in the next generation ?

A

1:1:1:1

B

9:3: 3:1

C

3:1

D

`1:1`

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The correct Answer is:
A
Two genes .A. and .B. are linked. In a dihybrid cross involving these two genes, the F heterozygousis crossed with homozygous recessive parental type (aa bb). The ratio of offspring in the next generation will be 1: 1. This type of cross is called as Test cross.
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