Bikini Bottom Genetics... : r/FellowKids - Free Printable

- TT: Ho
- Bb: He
- DD: Ho
- Ff: He
- tt: Ho
- dd: Ho
- Dd: He
- ff: Ho
- Tt: He
- bb: Ho
- BB: Ho
- FF: Ho

Purebred genotypes: TT, DD, tt, dd, ff, bb, BB, FF

Hybrid genotypes: Bb, Ff, Dd, Tt

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- YY: Yellow
- Yy: Yellow
- yy: Blue
- SS: Square
- Ss: Square
- ss: Round

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- Tall: TT, Tt
- Short: tt
- Pink body: PP, Pp
- Yellow body: pp

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Punnett Square for SpongeBob (Ss) and SpongeSusie (ss):

| | s | s |
|-----|-----|-----|
| S | Ss | Ss |
| s | ss | ss |

A. Possible genotypes: Ss, ss. Phenotypes: Square shape (Ss), Round shape (ss).

B. Chances of a child with a square shape: 2 out of 4 or 50%

C. Chances of a child with a round shape: 2 out of 4 or 50%

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Punnett Square for Patrick (Pp) and Patti (Pp):

| | P | p |
|-----|-----|-----|
| P | PP | Pp |
| p | Pp | pp |

A. Possible genotypes: PP, Pp, pp. Phenotypes: Pink body (PP, Pp), Yellow body (pp).

B. Chances of a child with a pink body: 3 out of 4 or 75%

C. Chances of a child with a yellow body: 1 out of 4 or 25%

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Punnett Square for Squidward (BB) and his bride (bb):

| | b | b |
|-----|-----|-----|
| B | Bb | Bb |
| B | Bb | Bb |

A. Possible genotypes: Bb. Phenotype: Light blue skin.

B. Chances of a child with light blue skin: 100%

C. Chances of a child with light green skin: 0%

D. No, Squidward’s children would not be considered purebreds because they are all heterozygous (Bb), carrying the recessive gene for light green skin.

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Punnett Square for Squidward’s son (Bb) and his wife (Bb):

| | B | b |
|-----|-----|-----|
| B | BB | Bb |
| b | Bb | bb |

A. Possible genotypes: BB, Bb, bb. Phenotypes: Light blue skin (BB, Bb), Light green skin (bb).

B. Chances of a child with light blue skin: 75%

C. Chances of a child with light green skin: 25%

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Punnett Square for Mr. Krabs (TT) and Mrs. Krabs (Tt):

| | T | t |
|-----|-----|-----|
| T | TT | Tt |
| T | TT | Tt |

A. Possible genotypes: TT, Tt. Phenotype: Tall eyeballs.

B. No, the hospital did not make a mistake. Since Mr. Krabs is homozygous dominant (TT) and Mrs. Krabs is heterozygous (Tt), all their children must inherit at least one dominant allele (T) and will have tall eyeballs. It is genetically impossible for them to have a child with short eyeballs (tt).