What this tests
Syllabus point 17.1 — Chromosomes, genes and proteins, in Inheritance. Difficulty easy (estimated from the question's demands, not a Cambridge rating).
Also set in
The same question, as Cambridge printed it in other papers.
Cambridge IGCSE Biology 0610 · 17.1 Chromosomes, genes and proteins
November 2025 · Paper 23 · Question 30
One real Cambridge question from Inheritance, with the official answer. Cambridge has printed this question 3 times.