Evolution

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What is Natural Selection?

Back

Natural Selection is the process by which organisms that are better adapted to their environment tend to survive and reproduce more than those that are less well adapted.

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Do organisms decide to evolve?

Back

No, they change because of natural selection.

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What are variations in a species?

Back

Variations are the differences among individuals of a species, such as different traits like bird beaks.

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What is the definition of fitness in evolutionary terms?

Back

Fitness is the ability of an organism to survive and reproduce in a specific environment.

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What is an adaptation?

Back

An adaptation is a behavioral or physical change in individuals of a species that allows for better survival in their environment.

Front

What is the role of genes in evolution?

Back

Genes are the units of heredity that contribute to variations among individuals, which can affect their fitness.

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What is selective breeding?

Back

Selective breeding is the process by which humans breed plants and animals for particular genetic traits.

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What is the difference between natural selection and selective breeding?

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Natural selection occurs naturally based on environmental pressures, while selective breeding is a human-directed process.

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What is a trait?

Back

A trait is a specific characteristic of an organism, which can be inherited or acquired.

Front

What is the significance of mutations in evolution?

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Mutations are changes in DNA that can lead to new traits, which may be beneficial, harmful, or neutral in terms of survival.