High School

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Round nose is completely dominant to a square nose. Cross two parents, both of which are hybrid (heterozygous) for round noses.

What are the phenotypes of the offspring?

Answer :

Final answer:

When two hybrid parents with round peas are crossed, the phenotypes of the offspring will be 75% round and 25% wrinkled.

Explanation:

In pea plants, when round peas (R) are dominant to wrinkled peas (r), and two parents that are hybrid (heterozygous) for round peas are crossed, the phenotypes of the offspring are going to be 75% round and 25% wrinkled. This is because when both parents are heterozygous for the round pea trait (genotype Rr), there is a 25% chance that they will each pass on the recessive wrinkled pea allele, resulting in offspring with the wrinkled pea phenotype (genotype rr).

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