The Punnett square represents the dihybrid cross between two pea plants. Here R represents the dominant allele for round shape of the seed and r represents the recessive allele for wrinkled shape of the seed. Y represents the dominant allele for yellow seed color and y represents the recessive allele for green seed color. Both the plants have the heterozygous genotype RrYy. What is the expected phenotypic ratio of dihybrid crosses?

Question

Biology

Dixie Hoover

1 May, 16:10

The Punnett square represents the dihybrid cross between two pea plants. Here R represents the dominant allele for round shape of the seed and r represents the recessive allele for wrinkled shape of the seed. Y represents the dominant allele for yellow seed color and y represents the recessive allele for green seed color. Both the plants have the heterozygous genotype RrYy. What is the expected phenotypic ratio of dihybrid crosses?

+5

Answers (1)

Know the Answer?

Johnathan · Answer 1

The answer is 9:3:3:1.

The expected phenotypic ratio of dihybrid crosses is 9:3:3:1. This means that in the cross of two plants with the heterozygous genotype RrYy there will be:

9 plants with round shape of seed and yellow seed color

3 plants with round shape of seed and green seed color

3 plants with wrinkled shape of seed and yellow seed color

1 plant with wrinkled shape of seed and green seed color