Gujarati
4.Principles of Inheritance and Variation
medium

A colourblind daughter is born when

A

Father is colourblind, mother is normal

B

Mother is colourblind, father is normal

C

Mother is carrier, father is normal

D

Mother is carrier, father is colourblind

Solution

(d)For a woman to be colourblind both her $X$ chromosomes should bear genes for the disease; which is possible only when her father is colourblind and her mother is either colourblind or a carrier of disease.

Standard 12
Biology

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