Variation & Evolution (AQA GCSE Biology Combined Science): Flashcards
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Evolution (definition)
Evolution (definition)
Change in inherited characteristics of a population over time through natural selection
Process that causes evolution
Process that causes evolution
Natural selection
When simple life forms first developed
When simple life forms first developed
More than three billion years ago
What provides variation in evolution
What provides variation in evolution
Mutations
Effect of a mutation with survival advantage
Effect of a mutation with survival advantage
Organism more likely to survive to breeding age
What happens to beneficial mutations
What happens to beneficial mutations
Passed to offspring
Beneficial mutation frequency over generations
Beneficial mutation frequency over generations
Increases within the population
Criterion for new species formation
Criterion for new species formation
Cannot interbreed to produce fertile offspring
Speciation (definition)
Speciation (definition)
Formation of a new species when populations cannot interbreed to produce fertile offspring
Theory of Evolution key concept
Theory of Evolution key concept
All species evolved from simple life forms