Study the pedigree chart given below. What does it show?
Inheritance of a condition like phenylketonuria as an autosomal recessive trait.
The pedigree chart is wrong as this is not possible.
Inheritance of a recessive sexlinked disease like haemophilia.
Inheritance of a sexlinked inborn error of metabolism like phenylketonuria.
Select the incorrect statement with regard to haemophilia.
If a man who is colour blind marries a women, who is pure normal for colour vision, the chances of their sons have colour blindness is
A husband and wife have normal vision but fathers of both of them were colour blind. Probability of their first daughter to be colour blind is
Gene for colourblindness is located on
All sons of a couple are colourblind because