A man having black eyes, whose father had blue eyes, marries a woman having blue eyes. If black eye is dominant over blue eyes, then what percentage of their offsprings can be blue-eyed?

25%

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50%

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75%

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100%

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Solution

The correct option is B
50%

Blue eye is a recessive character. This means the father of the man and the lady that this man marries, both are homozygous recessive (bb). But the man is having black eyes and he must be a heterozygous (Bb). The cross will be:

Thus, 50% offsprings will be blue-eyed.

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A man having black eyes, whose father had blue eyes, marries a woman having blue eyes. If black eye is dominant over blue eyes, then what percentage of their offsprings can be blue-eyed?

The correct option is B 50% Blue eye is a recessive character. This means the father of the man and the lady that this man marries, both are homozygous recessive (bb). But the man is having black eyes and he must be a heterozygous (Bb). The cross will be: Thus, 50% offsprings will be blue-eyed.

The correct option is B
50%

Blue eye is a recessive character. This means the father of the man and the lady that this man marries, both are homozygous recessive (bb). But the man is having black eyes and he must be a heterozygous (Bb). The cross will be:

Thus, 50% offsprings will be blue-eyed.