- For the eye color cross (BB x bb):
- Top alleles: B, B
- Side alleles: b, b
- Offspring genotypes in the square: Bb, Bb, Bb, Bb
- All offspring will have brown eyes (since B is dominant).
- For the hair cross (Cc x cc):
- Top alleles: C, c
- Side alleles: c, c
- Offspring genotypes in the square: Cc, cc, Cc, cc
- Half will have curly hair (Cc), half will have straight hair (cc).
- For the flower cross (RR x Rr):
- Top alleles: R, R
- Side alleles: R, r
- Offspring genotypes in the square: RR, RR, Rr, Rr
- All offspring will have red petals (since R is dominant).
- For the seed pod cross (SS x ss):
- Top alleles: S, S
- Side alleles: s, s
- Offspring genotypes in the square: Ss, Ss, Ss, Ss
- All offspring will have smooth seed pods (since S is dominant).
Parent Tip: Review the logic above to help your child master the concept of punnett square problems worksheet.
