Punnett Square Answer Key
1. If Mary's parents both have heterozygous brown eyes and brown eyes are dominant to green eyes, what are the chances of Mary having green eyes?
ANSWER: 25%
2. Red hair is recessive to brown hair. If Harry's mom has red hair and Harry's dad has heterozygous brown hair, what is the probability of Harry having brown hair?
ANSWER: 50%
3. If the tall pea plant gene is dominant to the short pea plant gene, then what is the probability of getting a short pea plant when 2 heterozygous pea plants are crosses with one another?
ANSWER: 25%
ANSWER: 25%
2. Red hair is recessive to brown hair. If Harry's mom has red hair and Harry's dad has heterozygous brown hair, what is the probability of Harry having brown hair?
ANSWER: 50%
3. If the tall pea plant gene is dominant to the short pea plant gene, then what is the probability of getting a short pea plant when 2 heterozygous pea plants are crosses with one another?
ANSWER: 25%