Genetics worksheet covering genotype and phenotype determination with handwritten answers.

Let’s go step by step to solve this problem.

We are given genotypes and need to figure out what phenotypes (physical traits) they would produce, based on whether a trait is dominant or recessive.

Remember:
- Dominant alleles (capital letters like P, R, B, T) will show up in the phenotype even if there’s only one copy.
- Recessive alleles (lowercase letters like p, r, b, t) only show up if there are two copies — no dominant allele present.

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Part 2a: Purple flowers are dominant to white flowers.

Genotype → Phenotype

- PP → Two dominant alleles → Purple
- Pp → One dominant, one recessive → Dominant shows → Purple
- pp → Two recessive → Only then does white show → White

*(Note: In the original image, “PP” was written twice — probably a typo. The third should be “pp”. We’ll correct that.)*

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Part 2b: Round seeds are dominant to wrinkled seeds.

- RR → Two dominant → Round
- Rr → One dominant → Round
- rr → Two recessive → Wrinkled

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Part 2c: Brown eyes are dominant to blue eyes.

- BB → Two dominant → Brown
- Bb → One dominant → Brown
- bb → Two recessive → Blue

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Part 2d: Bobtails in cats are recessive.

This means:
- Normal tail (long tail) is dominant.
- Bobtail (short tail) is recessive → only shows with “tt”

So:

- TT → Two dominant → Tail (normal long tail)
- Tt → One dominant → Tail (still normal, because dominant hides recessive)
- tt → Two recessive → Bob (bobtail)

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Now let’s write the final answers clearly.

Final Answer:
2.
a.
• PP → Purple
• Pp → Purple
• pp → White

b.
• RR → Round
• Rr → Round
• rr → Wrinkled

c.
• BB → Brown
• Bb → Brown
• bb → Blue

d.
• TT → Tail
• Tt → Tail
• tt → Bob