Evolutionary History Unit

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What is evolutionary history?

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Evolutionary history refers to the study of how species have changed over time through processes like natural selection and adaptation.

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What is a shared structure?

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A shared structure is a body structure in two or more species that features the same parts, indicating a common ancestor.

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What does it mean if two species have similar body structures?

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If two species have similar body structures, it suggests that they may share a common ancestor.

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NGSS.MS-LS4-2

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What is an ancestor population?

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An ancestor population is a group of organisms from which later species have evolved.

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NGSS.MS-LS4-2

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How does a stable environment affect species?

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In a stable environment, species are likely to maintain similar body structures over time due to consistent environmental pressures.

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What is speciation?

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Speciation is the process by which new species arise from existing species, often due to evolutionary changes.

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What is natural selection?

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Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

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What is adaptation?

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Adaptation is a change in a species that makes it better suited to its environment.

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What is the significance of body structures in evolutionary biology?

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Body structures provide evidence of evolutionary relationships and can indicate how species have adapted to their environments.

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NGSS.MS-LS4-2

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What is the difference between a trait and a shared structure?

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A trait is a characteristic of an organism, while a shared structure is a specific body part that is similar across different species.