AQA · Biology · 8461
GCSE Biology: Evidence for evolution
Inheritance, variation and evolution · AQA GCSE Biology (8461), specification point 4.6.3.4. Cards are generated from the exam board's own specification for "Evidence for evolution", and every card links back to the page it came from. Specification © AQA — used with attribution.
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Name two sources of evidence for evolution.
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The fossil record and antibiotic resistance in bacteria.
Who proposed the theory of evolution by natural selection?
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Charles Darwin.
How does the discovery of genes support Darwin's theory of evolution?
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It shows that characteristics are passed on to offspring in genes, explaining the inheritance Darwin's theory required.
How does the fossil record provide evidence for evolution?
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Fossils show how organisms have changed gradually over time, with older, simpler forms in deeper rock layers.
Why is antibiotic resistance in bacteria evidence for evolution?
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It shows natural selection happening in real time: resistant bacteria survive antibiotic treatment, reproduce and pass on resistance genes.
Evidence for Darwin's theory is that characteristics are passed to offspring in ?.
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genes
The theory of evolution by ? is now widely accepted.
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natural selection
Why was Darwin's theory not fully accepted when first proposed?
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The mechanism of inheritance (genes) was unknown, so there was insufficient evidence for how characteristics were passed on.
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