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Darwinian Evolution

QuestionAnswer
Evolution The accumulation of inherited changes within populations over time.
Population A group of individuals of one species that live in the same geographic area at the same time.
Species A group of organisms with similar structure, function, and behavior, that are capable of interbreeding with one another.
Artificial selection When breeders choose certain traits and breeding only individuals that exhibit the desired traits.
Adaptation An evolutionary modification that improves the chances of survival and reproductive success in a given environment.
Natural selection Better adapted organisms are more likely to survive and become the parents of the next generation.
Fossils Remains or traces left in sedimentary rock by previously existing organisms.
Index fossils Fossils of organisms that existed for a short period of time but preserved as fossils in large numbers.
Radioisotopes Emit invisible radiations to accurately measure the age of fossils.
Created by: pacetej
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