IB Biology Topic A3.2: Classification and Cladistics Notes

A3.2.1 Need for classification of organisms (HL)

6 minute read

A3.2.2 Difficulties classifying organisms into the traditional hierarchy of taxa (HL)

7 minute read

A3.2.3 Advantages of classification corresponding to evolutionary relationships (HL)

4 minute read

A3.2.4 Clades as groups of organisms with common ancestry and shared characteristics (HL)

4 minute read

A3.2.5 Gradual accumulation of sequence differences (HL)

7 minute read

A3.2.6 Base sequences of genes or amino acid sequences of proteins (HL)

8 minute read

A3.2.7 Analysing cladograms (HL)

6 minute read

A3.2.8 Using cladistics to investigate evolutionary relationships (HL)

5 minute read

A3.2.9 Classification of all organisms using evidence from rRNA base sequences (HL)

8 minute read