Variation and Natural Selection
Variation and Natural Selection

Individuals in a population show variation. Some variation is genetic and is caused by individuals having different alleles, which can produce different phenotypes.
Step-by-step lessons covering AQA GCSE Biology 6.2.2 Evolution for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Start with the foundational topics and build up to the higher-tier material.