Both father and mother have allele for PKU but are phenotypically normal. What is the probability that their child will have the disease?

While studying an autosomal recessive disorder in a family . It was noted that husband and wife both did not suffer from disease but their fathers had the disease. What is the probability that the couple will have a girl child without the disorder ?

While studying an autosomal recessive disorder in a family . It was noted that husband and wife both did not suffer from disease but their fathers had the disease. What is the probability that the couple will have a girl child without the disorder ?

Genes A and B are necessary for normal hearing. What is the possible genotype of a normal child of deaf mother/ father?

Both husband and wife have normal vision thought their father were colour blind and mothers without any allele for colour blindness. The probability of their daughters becoming colour blind is

A colourblind child have both normal parents, the child is

A colourblind child have both normal parents, the child is