Albinism is a congenital disorder resulting from the lack of the enzyme:

What is the probability of having a color-blind male child from two normal parents?

With the help of the given pedigree,find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in the $F_3$ generation.

Select the incorrect statement with regard to haemophilia.

Haemophilia is also called

$A$ normal woman,whose father was color-blind,marries a normal man. What will be the status of their sons?