Expected children of a blue-eyed (recessive) woman and brown-eyed (heterozygous dominant) man are likely to be?

All brown eyed

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One blue eyed and one brown eyed

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All blue eyed

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Three blue eyed and one brown eyed

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Solution

The correct option is B One blue eyed and one brown eyed
The blue/brown eye colour gene is located on chromosome 15. This is an autosomal chromosome. Brown eye colour is dominant and the blue eye colour is recessive. Thus, the genotype of father with brown eyes with heterozygous dominant is Bb and the genotype of the mother with blue eyes with recessive is bb and . The gametes will be B, b, b and b. So, the offsprings will be Bb (brown eyes) and bb (blue eyes).
Thus, the correct answer is option B.

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