B12/L5 - More About Genetics Lesson Worksheet With Answers / GCSE / AQA/ Combined Science

This resource gives students a clear and accessible introduction to pedigree charts, Punnett squares and sex determination. It explains how to predict offspring outcomes using Punnett squares and how X and Y chromosomes determine biological sex. Designed for GCSE AQA Science and suitable for all abilities, this resource can be used as homework, cover work or a complete lesson on its own. With guided practice, worked examples and exam-style questions, students can build confidence and deepen their understanding of inheritance.

This resource includes:

• An introduction to pedigree charts

• Clear explanations of Punnett squares and how to use them

• An introduction to sex chromosome inheritance

• Completed sex-determination Punnett square

• Practice questions covering genetic crosses and sex determination

• 10 exam-style questions that increase in difficulty

• Full model answers and step-by-step explanations

• Key terms such as genotype, phenotype, heterozygous, homozygous

• Ideal for GCSE AQA Science, suitable for all abilities

• Perfect for homework, cover work or a complete stand-alone lesson

• Clear answers and explanations for students to self or peer assess/cover/non-specialists.

These resources are designed to minimise printing, allowing teachers to reuse sheets while students complete all tasks in their exercise books or on separate paper.