Charles Darwin
Who came up with evolution?
Charles darwin
What does "fittest" mean?
Best suited to survive
What's an Adaptation?
A survival Trait
What are fossils?
Old remains
What causes variation?
Mutations
What book did Darwin write?
On the origin of species
What's an "advantageous" trait?
Helpful for survival
Example of structural adaptation?
Bird beak
What do fossils show?
Species change
What happens if the environment changes?
Traits shift
Which islands did Darwin study?
Galapagos Islands
Example of an adaptation?
Thick fur
Example of behavioral adaptation?
Migration
What are homologous structures?
Same form, different use
Example Today?
Antibiotic resistance
What ship did he sail on?
HMS Beagle
Why do weak ones die out?
cant compete
What's a physiological adaptation?
venom or body chemicals
What does DNA show?
Common ancestry
Who evolves, people or groups?
populations
What idea explains evolution?
Natural Selection
What does " fitness" really mean?
Reproduce Successfully
How do adaptations form?
Passed over time
Unused body parts
4 steps of natural selection?