A man who has hypertrichosis and is colorblind has a child with a woman who has normal hair distribution and colorvision but whose father is colorblind.
Can they have a girl who has normal hair distribution? _________
Can they have a boy who has normal vision? ___________
Can they have a girl who has hypertrichosis and is colorblind? _____________
No ; Yes : Yes |
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Yes ; Yes : Yes |
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No ; No ; No |
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No ; Yes ; No |
Answer will be NO; Yes ; NO
Hypertrichosis is a X linked dominant disorder , as the male or the father is affected so all the girl child will be affected as the X gene is inherited from the father to the girl child . On the other hand mother is normal and a boy child inherit Y from his father so all boy child will be normal.
Colour blindness is a X linked recessive disorder , as the father of the women had colour blindness so definitely the women will be the carrier for the disease , as the male have only one x chromosome so 50 % boy child will be unaffected 50 % will be affected by the disorder colour blindness.
NO; Thet will not have any girl child who have normal hair distribution.
YES; 50% chance is there they will have a boy with normal vision and 50 % boy child will be colour blind.
NO; they will not have any girl child who have colour blindness , the girl child will be carrier for colour blindness and all girl child will be affected by hypertrichosis.
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