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Why is the frequency of red-green colour blindness is many times higher in males than that in the females?

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asked Dec 7, 2017 in Biology by sforrest072 (157,439 points) ● 60 ● 409 ● 935
Why is the frequency of red-green colour blindness is many times higher in males than that in the females?

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answered Dec 7, 2017 by mdsamim (213,225 points) ● 5 ● 10 ● 15

For becoming colourblind, the female must have the allele for it in both her X-chromosomes; but males develop colourblindness when their solex-chromosome has the allele for it.

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