GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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100%
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75%
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50%
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0%
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Detailed explanation-1: -Each daughter has a 50% chance of being a carrier and each son has a 50% chance of being color blind. The daughters who are carriers can have color blind sons with the same logic.
Detailed explanation-2: -Since the female is a carrier, her genotype will be XhX. The male will be XY. Therefore there will be a 50% chance of the sons being colour blind and 50% chance of the sons being normal. Q.
Detailed explanation-3: -Hence, probability of an affected daughter is one out of two or 1/2 or 0.50.
Detailed explanation-4: -When a colour blind woman marries a normal visioned male, daughters will be carrier for this disease and all sons will be colour blind, this can be represented as follows: So, the correct answer is ‘All sons are colour blind, daughters carriers’.