Question
Biology Question on Principles of Inheritance and Variation
If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is
A
0
B
0.5
C
0.75
D
1
Answer
0
Explanation
Solution
Colour blindness is an X-linked recessive disease and shows criss-cross inheritance. 100% - carrier daughters (Phenotypically normal) 100% - Normal son