Question

Two genes ‘A’ and ‘B’ are linked. In a dihybrid cross involving these two genes, the F1 heterozygote is crossed with homozygous recessive parental type (aa bb). What would be the ratio of
(A) 1 : 1 : 1: 1

(B) 9 : 3 : 3 : 1

(C) 3 : 1

(D) 1 : 1.

can any one explain this

Answer 1

I'm not sure about this one but I think the answer is (b) 9:3:3:1
It's the phenotypic ratio for dihybrid cross