Principle Of Inheritance And Variation Question 505

Question: What are all the chances of colour blind daughter and sons being born in a marriage of normal man marrying a normal woman, whose father was colour blind [Kerala CET 2003]

Options:

A) All sons are normal and all daughters are colourblind

B) Both the sons and daughters are colourblind

C) All the sons are colourblind and all daughters are normal

D) 50% sons are colourblind and all daughters are phenotypically normal

Show Answer

Answer:

Correct Answer: D

Solution:

A woman whose father was colourblind is actually normal phenotypically but carrier of colourblindness if this woman marrying with normal man.

Then



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