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Question

Haemophilia is a type of:


A

Autosomal recessive disorder

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B

X-linked dominant disorder

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C

Autosomal dominant disorder

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D

X-linked recessive disorder

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Solution

The correct option is D

X-linked recessive disorder


Haemophilia is a type of X- linked recessive disease, which shows its transmission from unaffected carrier female to some of the male progeny. It is a genetic disorder in which the sufferers ( homozygous recessive female and the recessive X bearing male) are at risk of bleeding to death since blood does not clot in them. The heterozygous female (carrier) for haemophilia may transmit the disease to her sons.

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