Historically, all single-celled organisms without a nucleus were grouped together into a single kingdom, Monera, based on their cellular morphology.
Explain how our understanding of evolutionary relationships has developed from this traditional morphological classification to the modern three-domain system, highlighting the specific role of genetic and molecular analysis.
40 exam-style questions on AQA GCSE Biology 6.3 The development of understanding of genetics and evolution, covering 6.3.1 Theory of evolution, 6.3.2 Speciation, 6.3.3 The understanding of genetics, 6.3.4 Evidence for evolution, 6.3.5 Fossils, 6.3.6 Extinction, and 6.3.7 Resistant bacteria. Each one has a worked solution and a mark scheme showing where the marks go.