This is a lesson I used myself to teach the Inheritance concept of the Inheritance Genetics Inheritance and Populations unit, unit 7. - A level Biology, AQA specification.
Learning objective: To explain how genetic inheritance patterns arise from monohybrid, dihybrid, and codominant crosses, and analyse how linkage and statistical tests (χ²) are used to interpret inheritance data.
By the end of the lesson learners should be able to:
Success criteria:
SC1: Describe and illustrate key inheritance terms — gene, allele, locus, genotype, phenotype, and homologous chromosomes.
SC2: Use monohybrid, dihybrid, and codominant crosses to predict offspring genotypes and phenotypes.
SC3: Analyse deviations from expected genetic ratios and explain them using linkage, epistasis, and chi-squared tests.
Contains past paper questions that target this topic, some questions require knowledge from prior lessons. The mark scheme is also included to verify answers.
Powerpoint contains 47 slides (many of which guide students through the process of a chi squared test) and 9 past paper questions.
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