Neco 2021 Biology Question 40
Practice objective / multiple choice question 40 from the 2021 Neco Biology examination.
Two genes, A and B, are located on the same chromosome and are linked. The recombination frequency between them is 10 %. A plant heterozygous for both genes in the cis configuration (genotype AB/ab) is crossed with a plant homozygous recessive (ab/ab). Determine the expected phenotypic ratio of the offspring for the four possible phenotypes: both dominant (A_B_), dominant A only (A_bb), dominant B only (a_Bb), and both recessive (aabb). Express the ratio in its simplest whole‑number form.
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About This Question
This is Neco 2021 Biology Question 40. It is one of the objective questions from the 2021 Neco Biology examination.
Difficulty level: Medium .
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