Natural Selection and Speciation

Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest.

• Extinction

• Speciation

• Natural Selection

• Artificial Selection

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Darwin theorized that organisms with traits that are best suited to their environment will ________________

• increase in number

• become extinct

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What is the advantage of Darwin's finches having different shaped beaks?

• To look different from other species.

• To be able to eat the food readily available in the environment.

• To protect itself against predators.

• To protect itself against prey.

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What is another name for natural selection?

• survival of the smartest

• survival of the fastest

• survival of the biggest

• survival of the fittest

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Predict which moth would be expected to increase in population

• light

• dark

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Which is necessary for speciation to occur?

• adaptation

• mass extinction

• isolation

• acquired traits

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What is the basis of evolution?

• Randomness

• Variation among genes

• Similarities in DNA

• Similarities in phenotype

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True or false: A change in the environment can affect an organism’s ability to survive, and may therefore lead to natural selection.

• True

• False

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An inherited trait that helps an organism survive is a(n) __________.

• Fossil

• Adaptation

• Ancestor

• Natural selection

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Who was the naturalist that traveled the world to study plants and animals?

• Albert Einstein

• Charles Darwin

• Charles Barkley

• Isaac Newton

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