What selective breeding is
What selective breeding is

Selective breeding is artificial selection: humans choose parents with useful inherited characteristics and breed them. Variation means individuals in a population are not all the same, so some are better suited to the breeder's goal.
Step-by-step lessons covering Edexcel IGCSE Biology Selective breeding for IGCSE Biology. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Start with the foundational cell biology and core content before moving on to the more data-heavy ecology, genetics and practical-skills topics, which carry a large share of the exam marks.