Genetics worksheet with answers

In pea plants, purple flowers (A) are dominant over white (a). A plant with genotype Aa is crossed with a plant with genotype AA. What is the probability P that an offspring is heterozygous (Aa)?

In pea plants, purple flowers (A) are dominant over white (a). A plant with genotype Aa is crossed with a plant with genotype aa. What is the probability P that an offspring has white flowers?

Tall (A) is dominant over short (a), and round seeds (B) over wrinkled (b). The genes are on different chromosomes. For the cross AaBb × aaBb, what is the probability P that an offspring is tall, wrinkled seeds?

Tall (A) is dominant over short (a), and round seeds (B) over wrinkled (b). The genes are on different chromosomes. For the cross AaBb × aabb, what is the probability P that an offspring is tall, wrinkled seeds?

Two AaBb parents are crossed. Gene A gives black fur (dominant) or white fur; gene B gives tall plants (dominant) or short plants. Click the one cell for an offspring that is homozygous for black fur and shows short plants.

1. 1AB × AB
2. 2AB × aB
3. 3AB × Ab
4. 4AB × ab
5. 5Ab × AB
6. 6Ab × aB
7. 7Ab × Ab
8. 8Ab × ab
9. 9ab × AB
10. 10ab × aB
11. 11ab × Ab
12. 12ab × ab
13. 13aB × AB
14. 14aB × aB
15. 15aB × Ab
16. 16aB × ab

Two AaBb parents are crossed. Gene A gives yellow seeds (dominant) or green seeds; gene B gives purple flowers (dominant) or white flowers. Click the one cell for an offspring that is homozygous for yellow seeds and shows white flowers.

1. 1AB × Ab
2. 2AB × ab
3. 3AB × aB
4. 4AB × AB
5. 5Ab × Ab
6. 6Ab × ab
7. 7Ab × aB
8. 8Ab × AB
9. 9aB × Ab
10. 10aB × ab
11. 11aB × aB
12. 12aB × AB
13. 13ab × Ab
14. 14ab × ab
15. 15ab × aB
16. 16ab × AB