Question

Brown eyes in humans are dominant to blue eyes. A brown-eyed man, whose mother was blue-eyed, marries a brown-eyed woman whose father had blue eyes. What is the probability that this couple will have a blue-eyed child?
the man and woman are both hybrid brown with a blue recessive

do a Punnett Square with Bb and Bb
Probability is 1/4 or 25%

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