In pea plants, the allele for tall stems (A) is dominant over short (a), and the allele for purple flowers (B) is dominant over white (b). The two genes are linked on the same chromosome with a recombination frequency of 10 %. A plant heterozygous for both traits (genotype AB/ab) is crossed with a plant homozygous recessive (ab/ab).

Calculate the expected phenotypic ratio of the offspring.

Question

In pea plants, the allele for tall stems (A) is dominant over short (a), and the allele for purple flowers (B) is dominant over white (b). The two genes are linked on the same chromosome with a recombination frequency of 10 %. A plant heterozygous for both traits (genotype AB/ab) is crossed with a plant homozygous recessive (ab/ab).

Calculate the expected phenotypic ratio of the offspring.

Accepted Answer

9:9:1:1 (tall‑purple : short‑white : tall‑white : short‑purple)

Neco Model Questions Vol1 2019 Biology Question 14

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