Principle-Of-Inheritance-And-Variation Question 627
Question: Person whose father is colourblind marries a lady whose mother is daughter of a colourblind man. Their children will be [CPMT 1984; DPMT 1993]
Options:
A) All normal
B) All colour blind
C) All sons colour blind
D) Some sons normal and some colour blind
Show Answer
Answer:
Correct Answer: D
Solution:
A person whose father is colourblind i.e.
person is normal because colour blind genes located on x-chromosome of father and it is transfered into only its daughters.
This person marry with a lady whose mother is daughter of colour blind father i.e.
lady is carrier for colour blind.
Thus normal man marries with a carrier lady and their sons will be some normal and some colour blind.
BETA
