In tomatoes, two alleles of onegene determines whether the plant has purple (P) or green (G) stems, and a separate, independent gene determines whether the leaves a "cut" (C) or "potato" (Po). Five crosses of tomato plants (with the phenotypes show) give the following results:

Number of Progeny

Parental

Mating Phenotypes P, C P, Po G, C G, Po

1 P, C x G, C 321 101 310 107

2 P, C x P, Po 219 207 64 71

3 P, C x G, C 722 231 0 0

4 P, C x G, Po 404 0 87 0

5 P, Po x G, C 70 91 86 77

a. Determine which alleles are dominant.

What are the most probable genotypes for the paren'ts in each cross?

Question

Porter Shields

Biology

13 February, 19:55

In tomatoes, two alleles of onegene determines whether the plant has purple (P) or green (G) stems, and a separate, independent gene determines whether the leaves a "cut" (C) or "potato" (Po). Five crosses of tomato plants (with the phenotypes show) give the following results:

Number of Progeny

Parental

Mating Phenotypes P, C P, Po G, C G, Po

1 P, C x G, C 321 101 310 107

2 P, C x P, Po 219 207 64 71

3 P, C x G, C 722 231 0 0

4 P, C x G, Po 404 0 87 0

5 P, Po x G, C 70 91 86 77

a. Determine which alleles are dominant.

What are the most probable genotypes for the paren'ts in each cross?

+5

Answers (1)

Know the Answer?

Nola Serrano · Answer 1

The correct answer will be G/G; P/p x g/g; P/p

Explanation:

Let G be the dominant allele for stem color and g be the recessive allele for stem color. Let P be the dominant allele for leave shape and p be the recessive allele for leave shape.