Theory of Evolution (AQA GCSE Biology): Flashcards
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12 cards from this deck
Who proposed the theory of evolution?
Who proposed the theory of evolution?
Charles Darwin
When was 'On the Origin of Species' published?
When was 'On the Origin of Species' published?
1859
What is the source of variation within species?
What is the source of variation within species?
Mutations in DNA
What is natural selection?
What is natural selection?
Survival of the fittest - organisms with best traits survive & reproduce
What are alleles?
What are alleles?
Versions of a gene
Why did religion challenge Darwin's theory?
Why did religion challenge Darwin's theory?
Challenged belief God created all species as they are
What wasn't understood in Darwin's era?
What wasn't understood in Darwin's era?
Genetic inheritance and variation
Who proposed the acquired traits theory?
Who proposed the acquired traits theory?
Jean-Baptiste Lamarck
What was Lamarck's hypothesis?
What was Lamarck's hypothesis?
Traits acquired during lifetime passed to offspring
Why was Lamarck's theory disproven?
Why was Lamarck's theory disproven?
Only genetic info in sex cells passed on, not acquired traits
How did genetics support Darwin's theory?
How did genetics support Darwin's theory?
Showed how beneficial mutations could be inherited
How did the fossil record support Darwin's theory?
How did the fossil record support Darwin's theory?
Showed gradual changes in species over time