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NEET UG BIOLOGY MCQ: PRINCIPLE OF INHERITANCE AND VARIATION
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A colour blind man marries a woman with normal sight who has no history of colour blindness in her family. What
Is the probability of their grandson being colour blind?
Is the probability of their grandson being colour blind?
View answer and explanation
Correct option: B
0.5
Option A (0.25) is correct because the grandson's probability of being colourblind depends on his mother (the daughter of the colourblind man) being a carrier and passing the recessive allele to her son.
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