OCR GCSE Biology A · J247
Specification B5.2b · Paper 2 (Foundation), Paper 4 (Higher)
Revise: Classification systemsA natural classification system aims to place organisms into groups that reflect evolution and common ancestry. It considers several sources of evidence, including structural similarities and molecular evidence. Organisms in the same natural group should share characteristics because they inherited them from a common ancestor, rather than simply sharing one superficial feature.