Evolution Flashcards
structures still present but serves no purpose
Vestigial organs
The study of early development of organisms
Embryology
Same structure but different use
Homologous structure
Inheritence of acquired traits through selective use
Lamarck
The process by which modern organisms have descended from ancient organisms
Evolution
“Procsesses occuring now that have shaped earths geological features over long periods of time”
Lyell
Any inherited characteristic that increases an organisms chance of survival
Adaptation
Scarity of resources
Malthus
Bird species that helped Darwin shape his theory of evolution
Finches
Species today look different from their ancestors
Descent with modification
Group of islands off the coast of Ecuador
Galapagos islands
Members of each species compete regularly for resources
Lead to the struggle for existence
All living organisms are related to one another from a common ancestor
Common descent
Individuals that are best suited to their environment survive and reproduce most succesfully
Survival of the fittest
Humans select from the naturally occuring genetic variations in a species
Artifical selection
Natures way of choosing only certain individuals of a population to produce new individuals
Natural selection
Published by Darwin
Origin of species
“Earth is millions of years old”
Hutton
The ability to survive and reproduce
Fitness
Name of Darwins ship
Beagle
Preserved remains of ancient organisms
Fossils
Adaptations can be
Anatomical- a physical or chemical event inside the body of the organism
Structural- a physical feature
Behavioral- a behaviour that the organism does
Similar species found at different locations were adapted to the local environments
Geograpic distribution of living things
