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If a color blind man has a color blind daughter then the mother has to be color blind as well?
Wiki User
∙ 13y ago
The father has to be colorblind for the daughter to be colorblind because both X chromosomes must have the colorblindness gene in females because the colorblind gene is recessive. If only the mother is color deficient, then she merely passes on the gene to one of the X chromosomes in a female. If both the mother and father are both colorblind, then both X chromosomes in the female are effected and the female is colorblind.
There are two scenarios in which a daughter may be born colorblind.
1. The father is colorblind and the mother is a carrier of the colorblind gene. The daughter will be either colorblind or a carrier of the colorblind gene.
2. The father and mother are both colorblind. If this is the case, then all of the children will be born colorblind.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoNot nessesarily. The mother can be either color-blind or simply a carrier of the gene.
Wiki User
∙ 13y agoThe sons of an affected male will not inherit the trait from him, since they receive his Y chromosome and not his (defective) X chromosome.
Wiki User
∙ 12y agoNo, because she can be a carrier. Boys can only get the colourblind gene from the mother, but she can either be colourblind herself or just a carrier.
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Is it possible that a blind daughter has normal father and normal mother?
Yes, color blindness can skip generations.
A male who is colorblind marries a heterozygous womanWhat percent of their total children will be color-blind?
NOW. Colourblindness we will assume, is a Sex-Linked Disorder. Hence, the sex chromosomes are involved in determinig the phenotypes of the children. XY --male XX--female XbY--colourblind male XBXb --normal female Cross: (parents) Xby * XBXb F1 progeny/offspring XBXb, XbXb, XBY, XbY 50 % of the children will be colourblind. This is a very simple question. You also need to clarify within the question if it is sex linked or autosomal.
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