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Color Blindness

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    So the probability of this would be, a big
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    old zero. Now why is that? Well, we know that
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    if the mother is homozygous and unaffected, it means that
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    she is homozygous, and she has the dominant normal alleles.
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    The father is affected, so he must have a recessive
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    allele on the X, and nothing on the Y. Well,
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    of all the possible combinations that could happen, the father
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    could pass on the Y, and you'd get a boy.
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    But the mother's going to give an X in
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    both of those cases, and both of her X's are,
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    are dominant, non color-blind alleles, so the son is
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    going to be regular color vision. The father can pass
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    on the recessive allele from his X. But if
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    he does, the mother's just going to pass on the dominant
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    allele from one of her Xs. So you, at the
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    very most, be a carrier but you wouldn't be affected.
Cím:
Color Blindness
Video Language:
English
Team:
Udacity
Projekt:
BIO110 - Tales from the Genome
Duration:
0:51
Cogi-Admin edited Angol subtitles for Color Blindness
Cogi-Admin edited Angol subtitles for Color Blindness

English subtitles

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