A man and a woman,who do not show any apparen | vedclass

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(D) $1$. The parents are phenotypically normal,but they have affected children. This indicates that the disease is recessive.$2$. The disease affects

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Sex-linked recessive

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(D) $1$. The parents are phenotypically normal,but they have affected children. This indicates that the disease is recessive.$2$. The disease affects only the sons ($3$ out of $5$) and none of the daughters are affected.$3$. In $X$-linked recessive inheritance,a carrier mother $(X^CX)$ can pass the trait to her sons $(X^CY)$,while the father is unaffected $(XY)$.$4$. Since the trait appears in males and skips generations (parents are unaffected),it is characteristic of $X$-linked recessive inheritance.

$A$ man and a woman,who do not show any apparent signs of a certain inherited disease,have seven children ($2$ daughters and $5$ sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following modes of inheritance do you suggest for this disease?

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