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  1. GCSE
  3. Biology AQA

Biology

Biology cover artwork
  1. GCSE
  3. Biology AQA
  5. 6.1.8 Sex determination

6.1.8 Sex determination

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Revise AQA GCSE Biology 6.1.8 Sex determination with the question bank, lessons, revision guides, and flashcards.

Ordinary human body cells contain 23 pairs of chromosomes. 22 pairs control characteristics only, but one of the pairs carries the genes that determine sex. In females the sex chromosomes are the same (XX). In males the chromosomes are different (XY). • Students should be able to carry out a genetic cross to show sex inheritance.

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