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CAIE IGCSE Biology EXTENDED 1.2.5 Classification systems aim to reflect

CAIE IGCSE Biology EXTENDED 1.2.5 Classification systems aim to reflect
CAIE IGCSE Biology syllabusBiology 0610Exams 2026-2028

Practise linking classification to evolutionary relationships using shared ancestors, anatomy, fertility evidence and protein sequence evidence.

How this is tested

  • interpret a classification diagram to choose the pair with the most recent common ancestor
  • link identical protein sequences or other evidence to shared ancestry, not diet or mutation history
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