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The questions in this quiz are suitable for GCSE biology students studying sex determination, inherited disorders, the limits of genetic testing, family trees, and the work of Mendel.

If you struggled with the quiz, don't panic - we've got you! You can revise by clicking the links below.

To brush up on your GCSE genes and inheritance knowledge, click on the link to your awarding body specific revision:

Click the links below to try our GCSE biology exam-style or quick-fire quizzes and test your skills and knowledge: