Evolution

What would most likely happen if giraffes never evolved?

• they would survive

• They would thrive

• They would become extinct

• They will find another source of food

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Identify the process when an organism with an adaptation is able to to survive, reproduce and pass on genes for that adaptation.

• Evolution

• Adaptation

• Natural selection

• Fossilization

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Inherited/beneficial trait that helps an organism survive is a(n) __________.

• Fossil

• Adaptation

• Ancestor

• Natural selection

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Mutations are important because they bring about

• death of the organism in which they develop
• genetic variation needed for a population to evolve
• benefits for the individual, not for the population
• Hardey-Weinberg equilibrium within a population

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Which cellular change in an organism could be inherited by the next generation?

• a change in the ribosomes in the pancreas of a squirrel

• the deletion of a single DNA base in a sperm cell of a trout

• a decrease in the size of a vacuole in a rose leaf cell

• the transfer of a piece of a chromosome in the skin cell of a raccoon

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Which beetle had an adaptation for the environment?

• Green Beetles

• Brown Beetles

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Extinction occurs when a species

• has variation and the environment changes

• has little variation and the environment changes

• has variation and the environment stays the same

• has little variation and the environment stays the same

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A change in DNA is

• mutation

• meiosis

• mitosis

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Only mutations in _____________________________ can be passed down.

• body cells

• gametes

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Evolution requires

• no variation

• variation

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