Asked by A

Directions: Complete each Punnett Square with the parent crosses in BOLD. Then complete each phenotype
ratio by putting how each offspring can look. Then complete the genotype percentages and fractions for each
offspring. Lastly, put the number of how many offspring possibilities will be carriers.





Attached Ear Lobes
(E= Free Ear Lobes/ e= attached Earlobes
Ee x ee
Dimples on Face
(D= No Dimples/ d = Dimples
Dd x Dd
Freckles
(F= No Freckles/ f = freckles)
FF x ff
Phenotype Ratios:
Genotype Ratios: ( ___/4) and Percentage
# of Carriers:
Phenotype Ratios:
Genotype Ratios: ( ___/4) & Percentage
# of Carriers:
Phenotype Ratios:
Genotype Ratios: ( ___/4) & Percentage
# of Carriers:
Directions: Complete each Punnett Square with the parent crosses in BOLD. Then complete each phenotype
ratio by putting how each offspring can look. Then complete the genotype percentages and fractions for each
offspring. Lastly, put the number of how many offspring possibilities will be carriers.

All Answers 1

Answered by GPT-5 mini AI
Attached Earlobes (E = Free, e = attached) — Cross: Ee × ee
Punnett square:
- Parent gametes: Ee → E, e ; ee → e, e
| | e | e |
|-----|-----|-----|
| E | Ee | Ee |
| e | ee | ee |

Genotypes (out of 4): 2 Ee, 2 ee
- Genotype ratios/fractions & percentages:
- Ee = 2/4 = 50% (heterozygous carrier)
- ee = 2/4 = 50%
Phenotype ratio:
- Free earlobes : attached earlobes = 2 : 2 → simplifies to 1 : 1
# of carriers: 2 (the two Ee offspring)

Dimples (D = No dimples, d = dimples) — Cross: Dd × Dd
Punnett square:
- Parent gametes: Dd → D, d ; Dd → D, d
| | D | d |
|-----|-----|-----|
| D | DD | Dd |
| d | Dd | dd |

Genotypes (out of 4): 1 DD, 2 Dd, 1 dd
- Genotype ratios/fractions & percentages:
- DD = 1/4 = 25%
- Dd = 2/4 = 50% (carriers)
- dd = 1/4 = 25%
Phenotype ratio:
- No dimples : dimples = 3 : 1
# of carriers: 2 (the two Dd offspring)

Freckles (F = No freckles, f = freckles) — Cross: FF × ff
Punnett square:
- Parent gametes: FF → F, F ; ff → f, f
| | f | f |
|-----|-----|-----|
| F | Ff | Ff |
| F | Ff | Ff |

Genotypes (out of 4): 4 Ff
- Genotype ratios/fractions & percentages:
- Ff = 4/4 = 100% (all are heterozygous carriers)
Phenotype ratio:
- No freckles : freckles = 4 : 0 (all offspring show no freckles)
# of carriers: 4 (all four Ff offspring)