Neco 2019 Biology Question 3
Practice objective / multiple choice question 3 from the 2019 Neco Biology examination.
In peas, gene A (tall \(T\) vs dwarf \(t\)) and gene B (yellow \(Y\) vs green \(y\)) are linked on the same chromosome with a recombination frequency of 20\%. A plant heterozygous for both genes in coupling phase (\(TY/ty\)) is crossed with a double‑recessive test plant (\(ty/ty\)). What is the expected phenotypic ratio of the offspring (tall yellow : tall green : dwarf yellow : dwarf green)?
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About This Question
This is Neco 2019 Biology Question 3. It is one of the objective questions from the 2019 Neco Biology examination.
Difficulty level: Medium .
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