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 - when nature works for or against an organism depending on its adaptations, Survival of the fittest - A quick and easy way of explaining natural selection, Fitness - Organism’s reproductive success, Homologous Structure - Same structure, different function. EX: Whale flipper and human arm, Analogous Structure - Different structure, same function. EX: Bird wing and butterfly wing, Vestigial Structure - Structures that no longer serve a purpose EX: Whale hips, 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., Gene Flow - when organisms move from one population to another, bringing their unique genes to the gene pool, Genetic Drift - when gene frequency in the gene pool of a population changes due to chance, Mutations - changes in genetic information that can happen randomly due to chance or environmental factors,

Evolution Vocab

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