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7 Cards in this Set
- Front
- Back
Define evolution
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The gradual change of organisms over time.
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What is natural selection?
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Natural selection is Darwin's theory of evolution.
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What is the first step of Darwin's theory?
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The first step is that there is variation in every population between individuals, caused my the mutation of genes.
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What is the second step of Darwin's theory?
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The second step is that organisms compete for resources like food and shelter
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What is the third step of Darwin's theory?
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The third step is that if the environment changes, the organisms that are best adapted to the environment will survive and reproduce, and will pass on their genes.
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What is the fourth step of Darwin's theory?
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The fourth step of Darwin's theory is that organisms that are not well adapted will die so their genes are no passed on.
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What is the fifth step of Darwin's theory?
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The fifth step of Darwin's theory is that over time, the beneficial genes become more and more common in the population
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