Evolution (AQA GCSE Biology): Flashcards
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Definition of evolution
Definition of evolution
Change in inherited characteristics of a population over time through natural selection
What process causes evolution?
What process causes evolution?
Natural selection
What evolution may result in
What evolution may result in
Formation of a new species
When simple life forms first developed
When simple life forms first developed
More than three billion years ago
What mutations provide between organisms
What mutations provide between organisms
Variation
Effect of mutation with survival advantage
Effect of mutation with survival advantage
Organism more likely to survive to breeding age
What are beneficial mutations passed to?
What are beneficial mutations passed to?
Offspring
What happens to mutation frequency over generations
What happens to mutation frequency over generations
Increases within the population
What is speciation?
What is speciation?
When a population becomes so different it forms a new species (cannot interbreed to produce fertile offspring)
Criterion defining a new species
Criterion defining a new species
Cannot interbreed to produce fertile offspring