Genetics worksheet with answers

Two Tt parents are crossed. T gives purple flowers and is dominant over t, which gives white flowers. Click the cell of the Punnett square for an offspring with white flowers.

1. 1T × t
2. 2T × T
3. 3t × t
4. 4t × T

Two Tt parents are crossed. T gives purple flowers and is dominant over t, which gives white flowers. Click the cell for an offspring that has purple flowers and is homozygous.

1. 1t × t
2. 2t × T
3. 3T × t
4. 4T × T

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, round seeds?

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