Evolution Flashcards
Charles Darwin
Founder of modern evolutionary theory
What ship did Charles Darwin travel on and for how long?
The Beagle and for 5 years
What did Charles Darwin do?
Studied diversity of life on Galapagos Island
What is special about Galapagos Island?
Galapagos Island has never been inhabited by humans| Everything there adapted and evolved naturally
What is natural selection?
Its when nature selects you to be removed from the genepool.
Ex: bear eats you while you’re hiking in the forest
Selective Breeding
When humans choose two entities to breed and get a specific offspring.
While on Galapagos Island Darwin saw what 2 animals
Tortoises and finches
Fitness
Ability of an individual to survive and reproduce in its environment
What was Darwin’s book?
The Origin of Species
Darwin’s Influences
James Hutton, Charles Lyell, Malthus and Lamark
James Hutton
Earch is shaped by geological forces over long periods of time.
Lamark
Inheritance of aquired traits.
Charles Lyell
Published “Principles of Geology”
Malthus
Human populations of organisms will grow gaster than the space and food supplies needed to sustain it.
Adaptations
Any inherited characteristic increases an organisms chance of survival.
Adaptations that an individual acquires in their life does not
Pass onto their offspring.
Mimicry
An organism copying the appearance of another species.
Camoflauge
An organism’s ability to blend in with its surroundings
Other examples
Species can change their metabolism
Penicillin is no longer as effective because bacteria have evolved
Weeds and insects become resistant to chemicals meant to kill them.
Evidence of Evolution
Fossil Record - bones and teeth
Anatomy of organisms
Homologous Structures
Analogous Structures
Vestigial Structures
Similarities of Embryology
Homologous Structures
Almost same structure of a body part but with different functions
Analogous Structure
Body parts of different organisms that have the same function but different structure.
Vestigial Structures
Any body structure that is reduced or has no function in a living organism but may have at one time by ancestors.