Choose the incorrect statement for haemophili | vedclass

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(D) Haemophilia is a sex-linked recessive disorder,which means the gene for the disease is located on the $X$ chromosome.Because it is recessive,a fem

Vedclass · Accepted Answer

It is a sex-linked dominant disease.

Vedclass · Answer

(D) Haemophilia is a sex-linked recessive disorder,which means the gene for the disease is located on the $X$ chromosome.Because it is recessive,a female must have the mutation on both $X$ chromosomes to express the disease,while a male only needs one affected $X$ chromosome.Queen Victoria was a known carrier of haemophilia,and her pedigree shows the transmission of the disease to several royal families in Europe.The disease is caused by a defect in a single protein that is part of the cascade of proteins involved in blood clotting.Therefore,the statement that it is a sex-linked dominant disease is incorrect.

Choose the incorrect statement for haemophilia.

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