Which of the following human diseases provide | vedclass

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(A) Haemophilia is a classic example of a sex-linked recessive disorder in humans.It is caused by a mutation in the genes located on the $X$ chromosom

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Haemophilia

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(A) Haemophilia is a classic example of a sex-linked recessive disorder in humans.It is caused by a mutation in the genes located on the $X$ chromosome.Since it is recessive,it manifests more frequently in males (who have only one $X$ chromosome) than in females.In contrast,night blindness is typically related to vitamin $A$ deficiency,Mongolism (Down syndrome) is a chromosomal disorder caused by trisomy $21$,and Beri-beri is caused by vitamin $B_1$ deficiency.

Which of the following human diseases provides an example of sex-linked inheritance?

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