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O-LevelBiologyGenetics & Variation5090/12 · Oct/Nov 2021 · Q381 Mark

One gene has two codominant alleles, Aᴱ and Aᶠ, and one recessive allele, Aᴳ. How many different genotypes and phenotypes are possible?

A3, 3
B4, 6
C6, 4
D6, 6

✓ Correct answer

C: 6, 4

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About this question

Topic
Genetics & Variation, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source
O-Level Biology, Oct/Nov 2021 Paper 1 Variant 2, question 38.

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