State that 22 chromosome pairs control characteristics only and one pair determines sex.

State that 22 chromosome pairs control characteristics only and one pair determines sex.. Within Reproduction, this learning objective sits inside Sex determination for AQA Biology 8461. Focus on using ideas such as chromosome pairs accurately in your explanation. A strong response should define the core idea, describe the relevant biological process, and connect it back to the question wording instead of giving a vague definition. When revising, students should aim to explain the science clearly, include precise biological vocabulary, and show how the process or structure links to the wider topic rather than listing isolated facts.