Before 1977, all organisms without a nucleus were classified in a single kingdom. Carl Woese studied the chemistry of these organisms and found that they formed two very different groups.
Name the two domains that Woese created from the organisms that had been placed in this single kingdom.
Explain why Woese's evidence was more reliable than evidence based on what the organisms look like.
Suggest why Woese's three-domain system was not accepted by all scientists straight away.
40 exam-style questions on AQA GCSE Biology 6.4 Classification of living organisms, covering 6.4 Classification of living organisms. Each one has a worked solution and a mark scheme showing where the marks go.