If a colour blind man marries a normal vision | vedclass

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Question

(B) Colour blindness is an $X$-linked recessive disorder.The genotype of a colour blind man is $X^cY$ and that of a normal visioned woman is $X^CX^C$.

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(B) Colour blindness is an $X$-linked recessive disorder.The genotype of a colour blind man is $X^cY$ and that of a normal visioned woman is $X^CX^C$.When they cross,the offspring genotypes are:$X^cY 	imes X^CX^C ightarrow X^CX^c$ (Carrier daughter),$X^CX^c$ (Carrier daughter),$X^CY$ (Normal son),$X^CY$ (Normal son).All daughters are carriers (phenotypically normal) and all sons have normal vision.Therefore,$0\%$ of the offspring will show colour blindness phenotypically.

If a colour blind man marries a normal visioned woman,what is the percentage of offsprings showing colour blindness phenotypically (in $\%$)?

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