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One child is haemophilic (sex-linked tra...

One child is haemophilic (sex-linked trait), while its fraternal twins brother is normal. Which one of the following informations is most appropriate?

A

Haemophilic child is male

B

The other child is female and the father is haemophilic

C

Child is monozygotic twin

D

The mother must have been heterozygous

Text Solution

Verified by Experts

The correct Answer is:
D
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