Evolution and Natural Selection Concepts

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The idea of evolution by natural selection was developed by

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Charles Darwin

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Similar structures with different purposes found in different species are known as _____

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homologous structures

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Which of the following is a vestigial structure?

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hip bones in whales

Front

What happens to organisms when there is a big change in their environment, like a forest fire?

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organisms with the best adaptations survive

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Members of the same species competing for food, mates, and resources

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struggle for existence

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What is natural selection?

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The process where organisms better adapted to their environment tend to survive and produce more offspring.

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What are vestigial structures?

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Structures that have lost most or all of their original function through the course of evolution.

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What is the significance of homologous structures in evolution?

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They provide evidence of a common ancestor among different species.

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What is adaptation in the context of evolution?

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A trait that helps an organism survive and reproduce in its environment.

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What role does genetic variation play in natural selection?

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It provides the raw material for evolution, allowing some individuals to be better suited to their environment.