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Barney and Betty are about to have their first child. They both have "normal" feet but Barney's father has flat feet and Betty has a child from a previous marriage who has flat feet, meaning they are both heterozygous for the trait. What is the probability that they will have a boy with flat feet(recessive trait)? 25% 75% 100% 50%

Answer :

genotype for Barney and Betty: Ff (hybrid/hetero)

possible genotypes of offsprings: FF, Ff, Ff, ff

answer: 25%

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