The Development of Understanding of Genetics & Evolution (AQA GCSE Biology Combined Science): Flashcards
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Who first proposed the theory of evolution by natural selection?
Who first proposed the theory of 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 do fossils show about species over time?
What do fossils show about species over time?
How they have gradually changed
What do transitional forms illustrate?
What do transitional forms illustrate?
The gradual process of evolution
What is antibiotic resistance?
What is 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 does antibiotic resistance exemplify?
What does antibiotic resistance exemplify?
Real-time example of natural selection
What happens to resistant bacterial strains over time?
What happens to resistant bacterial strains over time?
Become more common