1. WHITEBOARD PUNNETT SQUARES

2.  1. In rabbits, gray fur is dominant to white fur.
If you mate a purebred gray male rabbit with
a hybrid gray female rabbit, what are the possible genotypes and phenotypes of the offspring?

3. 2. In certain species of gerber daisies,
red flowers are dominant to yellow flowers.
A daisy plant heterozygous for red flowers is crossed with a daisy plant with yellow flowers.
What are the possible genotypes and
phenotypes of the offspring?

4. 3. In cabbage butterflies, white wings are dominant to yellow wings
3. In cabbage butterflies, white wings are dominant to yellow wings. A heterozygous white wing butterfly is crossed with a yellow wing butterfly.
What are the possible genotypes and
phenotypes of the offspring?

5. 4. In guinea pigs, short hair is dominant over long hair
4. In guinea pigs, short hair is dominant over long hair. A pure-bred short haired guinea pig is crossed with a long haired guinea pig.
What are the possible genotypes
and phenotypes of the offspring?

6. 5. In a certain species of pine trees, short needles are dominant to long needles. A pine tree purebred for short needles is crossed
with a pine tree purebred for long needles.
What is the probability of an offspring having short needles?

7. 6. In summer squash, white squash is dominant over yellow squash
6. In summer squash, white squash is dominant over yellow squash.  A squash plant homozygous for white is crossed with a plant homozygous for yellow.
What are the possible genotypes and phenotypes of offspring?

8. 6. In guinea pigs, rough coats are dominant over smooth coats
6. In guinea pigs, rough coats are dominant over smooth coats. A purebred rough coat guinea pig mated with a purebred smooth coat guinea pig.
What % of the offspring would have a smooth coat?

9. 7. In blackbirds, long tails are dominant to short tails
7. In blackbirds, long tails are dominant to short tails. A female short-tailed blackbird mates with a heterozygous long-tailed blackbird.
What are the possible genotypes and
phenotypes of the offspring?

10. 8. In pigeons, long feathers are dominant to short feathers
8. In pigeons, long feathers are dominant to short feathers. A homozygous long feathered pigeon mates with a short feathered pigeon.
What are the possible genotypes and phenotypes of offspring?

11. 9. Can you curl your tongue on the sides?
Tongue-curling in humans is a dominant genetic trait. Suppose a man who is heterozygous for tongue-curling
marries a woman who is also heterozygous for this trait.
What is the probability that their children
will not be able to curl their tongue?

12. 10. A widow’s peak hairline is dominant to straight hairline
10. A widow’s peak hairline is dominant to straight hairline. A man heterozygous for widow’s peak hairline mates with a women having straight hairline.
What is the probability that their child will have straight hairline?

13. 11. In humans premature gray hair is dominant over normal hair coloring. Cross a homozygous premature gray haired person to a homozygous normal haired person.
What is the probability that their child will have premature gray hair?

14. 12. Some people have dimples, while others do not
12. Some people have dimples, while others do not. The presence of dimples is a dominant trait, while not having dimples is recessive.
Susie has dimples, but her husband, Tom, does not. Their first child has his father's phenotype.
What are the genotypes of the mother, father, and child?

15. 13. Cystic fibrosis is a recessive genetic disorder
13.Cystic fibrosis is a recessive genetic disorder. Ron is homozygous dominant and Nancy is a carrier of cystic fibrosis.
What is the probability that one of
their children will have cystic fibrosis?