Igcse Model Questions Vol1 2018 Biology Question 22
Practice objective / multiple choice question 22 from the 2018 Igcse Model Questions Vol1 Biology examination.
In a plant, flower colour (R = red, r = white) and plant height (T = tall, t = dwarf) are controlled by two linked genes on the same chromosome with a recombination frequency of \(10\%\). A heterozygous plant in coupling phase (genotype \(R T / r t\)) is crossed with a homozygous recessive plant (\(r r t t\)). What percentage of the offspring are expected to have the red‑dwarf phenotype (\(R t\))?
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This is Igcse Model Questions Vol1 2018 Biology Question 22. It is one of the objective questions from the 2018 Igcse Model Questions Vol1 Biology examination.
Difficulty level: Medium .
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