Evolution (OCR GCSE Biology A (Gateway Science Suite)): Flashcards
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Definition of evolution
Definition of evolution
Change in inherited characteristics of a population over time through natural selection
What all species evolved from
What all species evolved from
Simple life forms
When simple life forms first developed
When simple life forms first developed
More than three billion years ago
What causes evolution
What causes evolution
Natural selection
What mutations provide in evolution
What mutations provide in evolution
Variation between organisms
Effect of survival advantage from mutation
Effect of survival advantage from mutation
Organism more likely to survive to breeding age
How mutations are inherited
How mutations are inherited
Passed onto offspring
Timescale for mutation frequency increase in population
Timescale for mutation frequency increase in population
Many generations
Definition of speciation
Definition of speciation
Formation of a new species
When organisms become a new species
When organisms become a new species
When they can't interbreed to produce fertile offspring