IB Biology Topic A3.2 Classification and Cladistics (HL) covers syllabus content as part of Topic A3: Organisms under Theme A: Unity and Diversity. Use these notes, questionbank, videos, flashcards, and lessons to review the topic, practise exam questions, and move between notes, videos, flashcards, and lessons where available.
A3.2 Classification and cladistics is part of Topic A3: Organisms under Theme A: Unity and Diversity.
What this topic covers
A3.2.1 Need for classification of organisms (HL)
A3.2.2 Difficulties classifying organisms into the traditional hierarchy of taxa (HL)
A3.2.3 Advantages of classification corresponding to evolutionary relationships (HL)
A3.2.4 Clades as groups of organisms with common ancestry and shared characteristics (HL)
A3.2.5 Gradual accumulation of sequence differences (HL)
A3.2.6 Base sequences of genes or amino acid sequences of proteins (HL)
A3.2.7 Analysing cladograms (HL)
A3.2.8 Using cladistics to investigate evolutionary relationships (HL)
A3.2.9 Classification of all organisms using evidence from rRNA base sequences (HL)