Genetics Worksheets Page 8

Genetics with a Smile 8

14. Grandma and Grandpa Smiley are heterozygous for the star eye shape. If one of

their heterozygous children married a girl with blast-type eyes, what percentage of their

grandchildren should have starry eyes?

What percent would have blast-type eyes? Create a Punnett square to help you find

your answers.

15. Baby Smiley has curly hair, but neither of her parents do! Is this possible? Create a

Punnett square to help you find your answer.

(17) Aunt Smiley has the cutest pointed ears and would love to have children with

pointed ears! What type of ears would her husband need to have in order for her to get

her wish? Give the genotype and phenotype as part of your answer.

An adaptation of an activity by T. Trimpe

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