140 What You Know So Far

Summarise what you know about this topic so far under the headings provided. You can draw diagrams or mind maps, or write short notes to organise your thoughts in preparation for the NCEA style essay question that follows. Use the points in the introduction and the hints provided to help you: Interpreting the fossil record HINT: Include reference to relative dating and past environments.

Homologous proteins and DNA sequences HINT: How can sequence homology help determine phylogeny?

Homologous structures HINT: What do homology and vestigial structures tell us about common ancestry?

Biogeographical evidence HINT: Include reference to island biogeography and continental drift.