Evolution Review

Front

What are vestigial structures?

Back

Vestigial structures are anatomical features that have lost most or all of their original function through the course of evolution. An example is the wings of an ostrich.

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What is an example of a homologous structure?

Back

Homologous structures are body parts in different species that have similar structures but different functions, indicating a common ancestry. An example is the forelimbs of humans and bats.

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Define extinction.

Back

Extinction is the process in which a species completely dies out, meaning there are no living individuals left.

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What is adaptive radiation?

Back

Adaptive radiation is the process by which organisms diversify rapidly into a wide variety of forms to adapt to different environments.

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What does the term 'common ancestry' refer to?

Back

Common ancestry refers to the idea that different species share a common ancestor from which they have evolved.

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What is the significance of fossil evidence in evolution?

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Fossil evidence provides insights into the history of life on Earth, showing how species have changed over time and supporting the theory of evolution.

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What is the difference between homologous and analogous structures?

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Homologous structures share a common ancestry but have different functions, while analogous structures have similar functions but do not share a common ancestry.

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What is the role of mutations in evolution?

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Mutations are changes in DNA that can lead to new traits in organisms, providing the raw material for evolution through natural selection.

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What is natural selection?

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

Front

What is the concept of 'survival of the fittest'?

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'Survival of the fittest' refers to the idea that individuals with traits better suited to their environment are more likely to survive and reproduce.