Evidence for Evolution (AQA GCSE Biology): Flashcards
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Scientist who proposed evolution by natural selection
Scientist who proposed evolution by natural selection
Charles Darwin
Definition of fossils
Definition of fossils
Preserved remains/traces of organisms from millions of years ago
Where are fossils found?
Where are fossils found?
In layers of rock
What fossils provide as evidence
What fossils provide as evidence
Historical record of life on Earth
What transitional forms illustrate
What transitional forms illustrate
Gradual process of evolution
What fossil records demonstrate about species
What fossil records demonstrate about species
Existence of species that are now extinct
How fossils show species have changed
How fossils show species have changed
Show gradual changes over time
Definition of antibiotic resistance
Definition of antibiotic resistance
Bacteria evolving due to selective pressure from antibiotics
Cause of antibiotic resistance in bacteria
Cause of antibiotic resistance in bacteria
Mutations in bacterial DNA
What do resistant bacteria do when antibiotics are present?
What do resistant bacteria do when antibiotics are present?
Survive and reproduce
What happens to resistant strains over time
What happens to resistant strains over time
Become more common
What antibiotic resistance exemplifies
What antibiotic resistance exemplifies
Real-time example of natural selection