Part A: Vocabulary
1. D
2. A
3. B
4. E
5. C
6. AA, KK, TT
7. ee, qq, ww
8. AA, EE, RR
9. aa, rr
Part B: Punnett Squares
10. The first and fourth Punnett squares are correct.
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 NN box (homozygous dominant)
- Put an X through the two Nn boxes (heterozygous)
- Leave the 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 practice worksheet with answers.
