Evolution (Edexcel GCSE Biology): Flashcards
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Evolution definition
Evolution definition
Change in inherited characteristics of a population over time via natural selection
Age of first simple life forms
Age of first simple life forms
More than three billion years ago
Main cause of evolution
Main cause of evolution
Natural selection
What provides variation between organisms
What provides variation between organisms
Mutations
Effect of mutation with survival advantage
Effect of mutation with survival advantage
Organism more likely to survive and reproduce
Beneficial mutation frequency over generations
Beneficial mutation frequency over generations
Increases in the population
Speciation
Speciation
Formation of new species when populations can't interbreed to produce fertile offspring
Who proposed theory of natural selection
Who proposed theory of natural selection
Charles Darwin
Natural selection phrase
Natural selection phrase
Survival of the fittest
How new alleles arise
How new alleles arise
Through mutation
Bacterial evidence for evolution
Bacterial evidence for evolution
Antibiotic resistance developing through natural selection
Resistant organism example besides bacteria
Resistant organism example besides bacteria
Rats resistant to warfarin poison
Fossil definition
Fossil definition
Trace of plant/animal from thousands of years ago
Rock depth and fossil age relationship
Rock depth and fossil age relationship
Deeper rock = older fossil
How fossils evidence evolution
How fossils evidence evolution
Show species changed and developed over time