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| an evolutionary force that creates features of an organism that help it survive/reproduce and are created through evolution by natural selection |
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| shares appearance of model |
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| adaptive if model is venomous and mimic is non-venomous |
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| changes the average value of a trait |
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| normalizes trait to equilibrium |
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| creates bi-modal variation in trait |
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| traits that confer advantages in survival and reproduction are retained in the population and traits that are disadvantageous disappear |
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| an organism's size, shape & composition |
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| ability to produce offspring |
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| the evolution of similar adaptations in unrelated groups of animals |
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| nourish their young in the uterus during long pregnancies |
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| non-placental mammals that rear their young in external pouches |
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| a model of inheritance that assumes the mother & father each contribute a hereditary substance that mixes to determine the characteristics of the offspring |
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