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7. A mother has a widow’s peak hairline and the father does not. Four of the children have a
widow’s peak, and one child does not. Which trait is dominant and which is recessive?
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8. Freckles is dominant (F) to the absence of freckles (f). Fill in the Punnett square below.
Mother = Ff Father = ff
What is the probability that a child would have freckles? ___________
9. Free earlobe is dominant (E) to an attached earlobe (e). Fill in the Punnett square below.
Mother = EE Father = ee
What is the probability that a child would have attached earlobes? _________
10. In rabbits, black fur (B) is dominant to white fur (b). List the genotypes that would result
in a rabbit with black fur.
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11. Tall pea plants (T) are dominant to short (t) plants. Two plants were crossed and all the
plants in the first generation were tall. List the genotypes of the parents. Include all
possibilities.
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