2023TrialMultiple choice
Q9
1 mark
Question
In the human ABO blood group system, the alleles for antigens A and B are both expressed in an individual carrying both alleles. This is an example of:
(A) incomplete dominance
(B) co-dominance
(C) hybrid vigour
(D) polygenic expression
Syllabus alignment
Module 5 · Heredity
- Genetic VariationInterpret inheritance patterns, pedigrees and Punnett squares to model genotype combinations.