Practise reading branching classifications to identify recent common ancestors and explaining how anatomical or molecular evidence can revise evolutionary relationships.
Organisms can be classified by their features and by studying the sequence of bases in their DNA.
Fig. 5.1 is a diagram showing the evolutionary relationships between some different groups of organisms.
Each branch shows the point at which organisms developed new features that classify them as a new group.
The point where the branch starts also indicates a common ancestor shared by the new groups.
Fig. 5.1
Identify the names of the two groups that share the most recent common ancestor in Fig. 5.1. and