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structures that do not have a common evolutionary origin but are similar in function
process of breeding organisms with specific traits in order to produce offspring with identical traits
structural adaptation that enables species to blend with their surroundings; allows a species to avoid detection by predators
structural adaptation that enables one species to resemble another species; may provide protection from predators or other advantages
process by which individuals that are better suited to their environment survive and reproduce most successfully, also called survival of the fittest
structure in a present-day organism that no longer serves its natural purpose, but was probably useful to an ancestor
divergent evolution in which ancestral species evolve into an array of species to fit a number of diverse habitats
evolution in which species that once were similar to an ancestral species diverge
condition in which the frequency of alleles in a population remains the same over generations
occurs whenever a physical barrier divides a population, which results in individuals no longer being able to mate; can lead to the formation of a new species
any species with multiple sets of the normal set of chromosomes; results from errors during mitosis or meiosis
idea that periods of speciation occur relatively quickly with long periods of genetic equilibrium in between
occurs when formerly interbreeding organisms can no longer mate and produce fertile offspring
process of evolution of new species that occurs when members of similar populations no longer interbreed to produce fertile offspring within their natural environment
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