Theory, a well supported testable explanation, Fossil, remains of ancient organisms, Evolution, process of change over time, Occurs to populations NOT INDIVIDUALS, Charles Darwin, one of the first scientists to publish his ideas about evolution in a book, “The Origin of Species: By Means of Natural Selection”., Natural Selection, An organism's traits/ adaptations making it better suited to survive, reproduce, and pass on those traits., Survival of the fittest, A quick and easy way of explaining natural selection, Fitness, Organism’s reproductive success, Homologous Structure, Same structure different function, Analogous Structure, Different structure, same function. EX: Bird wing and butterfly wing, Vestigial Structure, Structures that no longer serve a purpose EX: Whale hips, Artificial Selection, Selection by humans for breeding of traits, Recombination, Process of crossing over to create more genetic variation, Common ancestry, the idea that all organisms now alive on Earth and all present day fossils trace back to one or a few “original species.”, Adaptations, inherited characteristic which increases chances of survival, Population, all the organisms of the same species living within a particular area, Gene Frequency, how often a gene occurs within a population..

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