Evolution and natural selection

Front

What is natural selection?

Back

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

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How do you 'win' at natural selection?

Back

Survive and reproduce.

Front

What determines biological fitness?

Back

Biological fitness is determined by how many offspring an organism leaves behind.

Front

What happens to organisms with helpful variations?

Back

They tend to live longer and reproduce more.

Front

What did Darwin say about variation within a species?

Back

Darwin stated that there will be variation or differences within a species.

Front

What is the role of competition in natural selection?

Back

Competition for resources leads to survival of the fittest, where only the best-adapted individuals survive.

Front

What is adaptation?

Back

Adaptation is a trait that helps an organism survive and reproduce in its environment.

Front

What is the significance of genetic variation?

Back

Genetic variation is crucial for natural selection as it provides the raw material for evolution.

Front

How does environmental change affect natural selection?

Back

Environmental changes can alter the selective pressures on a population, leading to changes in which traits are favored.

Front

What is the difference between artificial selection and natural selection?

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Artificial selection is the process by which humans breed organisms for desired traits, while natural selection occurs without human intervention.