Evolution Mid Unit Review 2025

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What is isolation in the context of evolution?

Back

Isolation refers to the separation of populations, which can lead to the development of distinct species due to lack of gene flow.

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What is an adaptation?

Back

An adaptation is a unique physical characteristic or ability that enhances an organism's survival in its specific habitat.

Front

What does the modern theory of evolution state?

Back

The modern theory of evolution states that physical traits are inherited, some traits provide survival advantages, and changes can become permanent over time.

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How do new species arise according to evolutionary theory?

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New species arise through mutations and differences in environmental factors that cause populations to adapt differently.

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Who is credited with popularizing the theory of evolution?

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Charles Darwin is credited with popularizing the theory of species evolution.

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What is a vestigial organ?

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A vestigial organ is a body part that has lost its original function through evolution.

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What role do mutations play in evolution?

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Mutations introduce genetic variation, which can lead to new traits that may provide survival advantages.

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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.

Front

Define speciation.

Back

Speciation is the evolutionary process by which populations evolve to become distinct species.

Front

What is genetic drift?

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Genetic drift is a mechanism of evolution that refers to random changes in the frequency of alleles in a population.