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    Red - green colorblindness

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    A colorblind woman marries a man with normal color vision. What percentage of their sons would be expected to be coloblind, what percentage of their daughters would be ecpected to be colorblind explain answers about sons and duarghters that would be expected to be colorblind in genetic words.

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    Colorblindness is a recessive, sex-linked trait (on the X allele).

    Females have two X chromosomes and males have one X and one Y. Therefore, a colorblind female must be homozygous for the colorblind gene. A man with normal vision will not have the recessive colorblind gene (men can't be carriers because they have only one X chromosome, they ...