Biology · BGCSE / Inheritance and genetics
StructuredPast exam questionForm 5 · BGCSE
A man of blood group B is married to a woman. They have three sons and a daughter. The sons are of blood groups A, B and AB. The daughter is married to a man of blood group B and they have two sons of blood group AB and O.
- aDescribe a pedigree for inheritance of blood groups for this family. [4]
- bGiven that the genotype of the daughter is IᴬIᴼ, what are the two possible genotypes of her mother? [1]
You'll mark your own answer against the marking guide when you hand it in.
Source: BEC BGCSE Biology 2019, Paper 3, Question 7(b)
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