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Question : 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 ?

Answer»

1:1:1:1
9:3: 3:1
3:1
`1:1`

Solution :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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