Part A: Vocabulary
1. D. homozygous
2. A. alleles
3. B. dominant
4. E. recessive
5. C. heterozygous
6. AA, KK, TT
7. ee, qq, ww
8. AA, EE, RR
9. aa, rr
Part B: Punnett Squares
10. Correct Punnett squares: Second and Fourth
11. Gametes (alleles) from each parent
12. Offspring genotypes
13.
First square (NN x nn):
- Top row: Nn, Nn
- Bottom row: Nn, Nn
- All four boxes get an X (heterozygous)
Second square (Nn x NN):
- Top row: NN, Nn
- Bottom row: NN, Nn
- Circle the two NN boxes (homozygous dominant)
- Put an X through the two Nn boxes (heterozygous)
Third square (Nn x Nn):
- Top row: NN, Nn
- Bottom row: Nn, nn
- Circle the one NN box (homozygous dominant)
- Put an X through the two Nn boxes (heterozygous)
- Leave the one nn box unshaded (homozygous recessive)
Fourth square (Nn x nn):
- Top row: Nn, nn
- Bottom row: Nn, nn
- Put an X through the two Nn boxes (heterozygous)
- Leave the two nn boxes unshaded (homozygous recessive)
Parent Tip: Review the logic above to help your child master the concept of punnett square worksheet answers.
