Natural Selection

Billions of years ago, some algae began to change, eventually becoming our modern day plants such as flowers, grass, and ferns. This is an example of…

• Extinction

• diversification

• Fossilization

• selective breeding

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The butterflies above show…

• Extinction

• Variation

• Mimicry

• Analogous structure

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An adaptation is

• a feature that is common in a population because it helps the organism survive and reproduce.

• the process by which a single individual pass on their traits to offspring.

• the process in which populations change over time.

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Natural selection is:

• a feature that is common in a population because it helps the organism survive and reproduce.

• the process in which populations change over time.

• the process by which a single individual pass on their traits to offspring.

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NGSS.MS-LS4-4

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What evidence do scientists have to support the idea that some species share a common ancestor?

• DNA comparison

• fossil records

• homologous structures

• All of the above

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Selective breeding of dogs, horses, and even types of apples, is an example of…

• speciation

• analogous structure

• natural selection

• artificial selection

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Darwin didn’t know how traits were passed on from generation to generation. Today we know one of the important aspects of evolution is that traits are passed on through

• denim pants

• genes

• adaptation

• fossils

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What is the connection between genetics and natural selection?

• Genes vary between individuals and that variation causes mutations
• Individuals vary in their appearance and that variation causes mutations.
• Mutations can lead to variation that may affect an individual’s survival.

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Why don’t we have a complete fossil record of all life that’s ever lived?

• Fossil formation requires a rare mix of physical and biological conditions.
• Fossils must be exposed at Earth’s surface to have a chance of being found.
• Fossils can be destroyed when rocks erode, melt, or change composition.
• All of the above

Which layer is the oldest?

• 1
• 2
• 3
• 4

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