Evolution & Natural Selection

Define natural selection.

• An inherited characteristic that increases chances of survival

• The process where organisms with traits well-suited to their environment survive and reproduce at a greater rate

• A growing population causes a scarcity of resources

• Differences in the DNA sequence

Define fitness.

• An organism's ability to survive and reproduce in a specific environment

• The process where organisms with traits well-suited to their environment survive and reproduce at a greater rate

• A growing population causes a scarcity of resources

• Differences in the DNA sequence

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Define variation.

• An organism's ability to survive and reproduce in a specific environment

• The process where organisms with traits well-suited to their environment survive and reproduce at a greater rate

• A growing population causes a scarcity of resources

• Differences in the DNA sequence

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Define homologous structures.

• Remains of dead organisms

• Similar bone structures being found among more closely related organisms

• How embryos of different species look similar

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Define fossil record.

• Remains of dead organisms

• Similar bone structures being found among more closely related organisms

• How embryos of different species look similar

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Define embryology.

• Remains of dead organisms

• Similar bone structures being found among more closely related organisms

• How embryos of different species look similar

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A trait that makes a species better suited to survive in its environment is called a(n) _________.

• variation

• adaptation

• natural selection

• isolation

___ are mistakes in the DNA that cause variation within a species.

• Mutations

• Adaptations

• Speciations

• Isolations

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Organisms with the most beneficial traits will survive. This is commonly known as

• the theory of evolution.

• variations.

• survival of the fittest.

• ecosystems.

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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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