Any DIFFERENCE between individuals of the same species.
Trait that can be PASSED DOWN to offspring through genes.
Inherited characteristic that INCREASES an organism's chance of survival or reproduction in its environment.
An organism's ability to SURVIVE and REPRODUCE in its environment.
Process by which better adapted individuals survive and reproduce in an environment more successfully than others; It explains HOW evolutions occurs.
"Descent with modification", the idea that modern species are descendants of ancestral species that gradually changed.
Naturalist who formulated a theory of evolution by natural selection on his trip to the Galapagos Islands
REQUIREMENTS FOR EVOLUTION
-Natural selection allows evolution to occur if:
1. VARIATION exists within a species
2. These variations are HERITABLE
3. These Heritable Variations affect the FITNESS of an individual (survival or reproduction)
Selection by HUMANS for breeding of useful traits from the natural variation among plants and animals
He believed that acquired traits could be passed on to future generations
Ex.) Giraffes stretched their necks and made them longer over time.