16. Two genes ‘A’ and ‘B’ are linked. In a dihybrid cross involving these two

genes, the F1 heterozygote is crossed with the 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

Solution:

Option (d) is the answer.