A girl of normal vision whose father was colo | vedclass

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Question

(b) Infact the girl with normal vision is carrier because her father is colourblind (daughter of colourblind father are either colourblind or carrier)

Vedclass · Accepted Answer

$50\%$ colourblind

Vedclass · Answer

(b) Infact the girl with normal vision is carrier because her father is colourblind (daughter of colourblind father are either colourblind or carrier) and when she marries a normal man the possibility of their sons being colourblind is $50\%$ because the genotype of parents is $X^CX$ and $XY$,

so only half of the possible combinations of $XY$ have the $X$-linked recessive genes which exhibit the disease.

A girl of normal vision whose father was colourblind marries a man of normal vision whose father was also colourblind. Their sons would be (of total number of $sons$)

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