Modern methods of classification rely on the analysis and comparison of base sequences inn DNA. Describe the type of evidence that scientists used for classifying organisms before they were able to sequence DNA.

1 study, similarities / differences in, morphology / appearance / phenotype / features/ characteristics / shape; 2 any example; e.g. presence or absence of wings 3 study, similarities / differences in, anatomy / internal structure of organisms; 4 any example; e.g. skeleton / organs /bones /teeth 5 AVP; study, similarities /differences in, any other type of evidence 6 AVP; any example of the type of evidence given