Answer: natural selection.
- A natural selection
- B artificial selection
- C only mutation
- D simple migration
Correct answer: A. natural selection
Explanation: Pollution favoured dark moths, illustrating natural selection in action.
A simple phylogenetic tree: a common ancestor branches into several descendant lineages over time, with each branch point marking a speciation event.
Concept context
Origin of life, Darwin's theory, natural selection, speciation, and evidence for evolution.