Evolution by natural selection

Front

What is a mutation?

Back

A mutation is a random change in the DNA of a gene that can lead to genetic variation.

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What does evolution mean?

Back

Evolution means to change and adapt over time.

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What is another name for natural selection?

Back

Natural selection is also known as survival of the fittest.

Front

Which individuals will increase in a population over time in natural selection?

Back

More fit individuals will increase in a population over time.

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What is an adaptation?

Back

An adaptation is a change in an organism that allows it to survive in its environment.

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What is genetic variation?

Back

Genetic variation refers to the differences in DNA among individuals in a population.

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What is the gene pool?

Back

The gene pool is the total collection of genes in a population at any one time.

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What is allele frequency?

Back

Allele frequency is the proportion of a specific allele among all allele copies in a population.

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What is the role of environmental factors in natural selection?

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Environmental factors influence which individuals are more likely to survive and reproduce.

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What is fitness in the context of evolution?

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Fitness refers to an organism's ability to survive and reproduce in its environment.