- Part A: Vocabulary
- 1. D. homozygous
- 2. A. alleles
- 3. B. dominant
- 4. E. recessive
- 5. C. heterozygous
- Part A: Circle the choices
- 6. Homozygous dominant: AA, KK, TT
- 7. Homozygous recessive: ee, qq, ww
- 8. Genotypes in which dominant gene must show: AA, EE, RR
- 9. Genotypes in which recessive gene must show: aa, rr
- Part B: Punnett Squares
- 10. Correct Punnett squares: First and fourth squares.
- 11. The letters on the outside stand for the alleles from each parent (gametes).
- 12. The letters on the inside stand for the possible genotypes of the offspring.
- Part B: Problem 13
- Square 1 (NN x nn):
- Top row: Nn, Nn
- Bottom row: Nn, Nn
- All are heterozygous → Mark all with X.
- Square 2 (Nn x NN):
- Top row: NN, Nn
- Bottom row: NN, Nn
- Circle: NN, NN
- Mark with X: Nn, Nn
- Square 3 (Nn x Nn):
- Top row: NN, Nn
- Bottom row: Nn, nn
- Circle: NN
- Mark with X: Nn, Nn
- Leave unshaded: nn
- Square 4 (Nn x nn):
- Top row: Nn, nn
- Bottom row: Nn, nn
- Mark with X: Nn, Nn
- Leave unshaded: nn, nn
Parent Tip: Review the logic above to help your child master the concept of punnett square practice worksheet answers.
