If a colour blind woman marries a normal visioned man, their sons will be

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4.Principles of Inheritance and Variation

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If a colour blind woman marries a normal visioned man, their sons will be

A

all colour blind

B

all normal visioned

C

onehalf colour blind and onehalf normal

D

threefourths colour blind and onefourth normal.

(AIPMT-2006) (AIPMT-1999)

Solution

(a) : Colourblindness is a recessivesexlinked trait.All sons will be colour blind and all daughters will be carriers.

Standard 12

Biology

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