A hereditary disease which is never passed on | vedclass

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Question

(A) male has one $X$-chromosome and one $Y$-chromosome $(XY)$.He passes his $X$-chromosome to all his daughters and his $Y$-chromosome to all his sons

Vedclass · Accepted Answer

$X$-chromosomal linked disease

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(A) male has one $X$-chromosome and one $Y$-chromosome $(XY)$.He passes his $X$-chromosome to all his daughters and his $Y$-chromosome to all his sons.Therefore,an $X$-linked recessive or dominant trait present on the father's $X$-chromosome will be inherited by his daughters,but never by his sons,because the son receives the $Y$-chromosome from the father.

$A$ hereditary disease which is never passed on from father to son is

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