Question

A husband and wife have normal vision although both of their fathers are red green color blind which is inherited as an x-linked recessive trait.What is the probability that their first child will be:- (a) A normal son (b) A carrier daughter (c) A colour blind son (d) A colourblind daughter​

Answer 1

Answer:

When a color blind father and a mother who carries the color blind gene have children, there is a 50% chance that their sons will be color blind. Their daughters, however, will have a 50% chance of being color blind and 100% chance of being carriers of the gene

Answer 2

a normal son = 1/4

a carrier daughter =1/4

a colour blind son =1/4

a colour blind daughter=0

reason it is X linked  recessie trait

so the mother will be carrier

and the father will be normal because from his father Y gene is passed to him not X