Helena received a pea plant from her neighbor, and she wants to know its genotype. The neighbor told Helena that the plant produces round peas, which is a dominant trait (R) to wrinkled peas (r). Helena performs a test cross (mates with homozygous recessive) and observes that half of the offspring plants produce wrinkled peas. What is the genotype of the plant Helena received from her neighbor?

Question

Biology

Marisa Liu

26 January, 07:33

Helena received a pea plant from her neighbor, and she wants to know its genotype. The neighbor told Helena that the plant produces round peas, which is a dominant trait (R) to wrinkled peas (r). Helena performs a test cross (mates with homozygous recessive) and observes that half of the offspring plants produce wrinkled peas. What is the genotype of the plant Helena received from her neighbor?

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Answers (1)

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Warren Hunter · Answer 1

Answer:The genotype of the pea plant is (Rr)

Explanation:

Since a test cross was done with homozygous pea plant which were wrinkled, and half were wrinkled, it shows that the pea plant under investigation carries two alleles, one for round plant and the other one for wrinkled pea plant.