Evolution - Change over time, Species - A group of organisms that can produce offspring with one another, Fossil - Preserved remains of ancient organisms, Variation - Differences between members of the same species, Adaptation - Any trait that gives an organism an advantage that enables it to survive and reproduce, Population - A group of organisms that belong to the same species, Fitness - The ability of organisms to survive AND reproduce, Homologous Structures - “Same but different”. Like the bones in a dolphin’s flipper and a monkey's arm, Analogous Structures - “Different but the same” Like wings in a butterfly and a bird. Do the same thing but built very differently., Vestigial Structures - Structures still present in an organism but no longer needed. Appendix in humans, pelvis in whales., Genetic Drift - Change in the frequency of an existing gene in a population due to chance. A natural disaster can cause this. , Gene Flow - A transfer of genetic material from one population to another., Mutation - A change in the DNA sequence, Speciation - A group of organism is separated from others of its species and over time develops new characteristics that lead to it becoming a new species. , Convergent Evolution - Organisms that are not closely related develop similar features as solutions to similar problems. Body shape of sharks and dolphins. , Divergent Evolution - Two groups of the same species become separated and develop different characteristics for different environment conditions. , Extinction - All members of a species have died.,

Evolution

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