O-LevelBiologyGenetics & Variation5090/12 · May/June 2019 · Q381 Mark

The diagram shows a family tree with the blood groups of some individuals labelled. [Figure 38.1] What are possible blood groups for the numbered individuals?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

AA, B, A, A, B, B

BA, B, A, B, AB, O

CAB, O, A, A, B, B

DAB, O, A, B, AB, O

✓ Correct answer

A: A, B, A, A, B, B

Oracle Prep sorts past-paper questions by topic, so you can drill Genetics & Variation and see which topics are most likely to come up next.

Topic: Genetics & Variation, O-Level Biology (syllabus 5090). Multiple choice, 1 mark.
Source: O-Level Biology, May/June 2019 Paper 1 Variant 2, question 38.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content