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Haemophilia is mentioned as a trait carr...

Haemophilia is mentioned as a trait carried by the mother and passed to her sons. What is the pattern of inheritance for this trait?

A

Haemophilia is an allele carried on one of the mother's autosomal chromosomes.

B

Haemophilia is an allele carried on the Y-chromosome because more males have this genetic disorder than females.

C

Haemophilia is an allele carried on the X-chromosome and can be directly inherited by the son from father or the mother.

D

Haemophilia is carried on the X-chromosome and can only be inherited by the son if the mother is a carrier.

Text Solution

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The correct Answer is:
D
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