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(A) Color blindness is an $X$-linked recessive disorder. Let the genotype of the color-blind mother be $X^cX^c$ and the normal father be $XY$. When th

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Color-blind sons and normal carrier daughters

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(A) Color blindness is an $X$-linked recessive disorder. Let the genotype of the color-blind mother be $X^cX^c$ and the normal father be $XY$. When these parents cross: - The mother produces gametes $X^c$ and $X^c$. - The father produces gametes $X$ and $Y$. - The offspring genotypes will be: - $X^cX$ (Carrier daughter) - $X^cY$ (Color-blind son) Therefore,all sons will be color-blind and all daughters will be normal carriers.

$A$ color-blind mother and a normal father will have:

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