Question

the gene for blue eye(b) is recessive to gene for brown eyes(B).ilustrate with the help of cross and answer the following 1. what is the genotype of parents​

Answer 1

Explanation:

In man, blue eyes are recessive and brown ones are dominant.

In case of human males - XY (Only X chromosome can carry genes, but Y cannot)

In case of human females - XX (Both X chromosomes will carry genes)

If the son is having Brown eyes, his expected genotype is XB Y

Genotype of mother with blue eyes is XbXb

Thus the genotype of father has to contain one B gene which had transferred to the offspring.

Genotype of father is XB Y- Phenotype is brown eyes