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What are mutations?

Back

Mutations are changes in the DNA sequence of an organism's genome. They can lead to genetic variation, which is essential for evolution.

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Why are mutations important for evolution?

Back

Mutations are important because they bring about genetic variation needed for a population to evolve.

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What is evolution?

Back

Evolution is the gradual change in species over time, driven by processes such as natural selection and genetic drift.

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What does the 'tree of life' represent?

Back

The 'tree of life' is a metaphor for the idea that all living organisms share a common ancestor.

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What is an adaptation?

Back

An adaptation is a feature that allows an organism to survive better in its environment.

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How long did Darwin's expedition last?

Back

Darwin's expedition took 5 years.

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What is natural selection?

Back

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

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What is genetic variation?

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Genetic variation refers to the differences in DNA among individuals within a population, which is crucial for evolution.

Front

What is a homologous structure?

Back

A homologous structure is an anatomical feature in different species that is similar due to shared ancestry.

Front

What is a vestigial structure?

Back

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