Evolution Review

Front

What are analogous structures?

Back

Structures that have the same function but different evolutionary origins, such as a bird's wing and a butterfly's wing.

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What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

Can individuals evolve?

Back

No, only populations can evolve; individuals cannot evolve.

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What is disruptive selection?

Back

A type of natural selection that favors extreme phenotypes over intermediate phenotypes.

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What is directional selection?

Back

A type of natural selection that favors one extreme phenotype over others, leading to a shift in the population's traits.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures have a common evolutionary origin but may serve different functions, while analogous structures serve similar functions but have different evolutionary origins.

Front

What is the significance of variation in a population?

Back

Variation is essential for natural selection, as it provides the raw material for evolution.

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What role does mutation play in evolution?

Back

Mutations introduce new genetic variations into a population, which can lead to new traits that may be subject to natural selection.

Front

What is the Hardy-Weinberg principle?

Back

A principle that describes the genetic equilibrium in a population, stating that allele frequencies will remain constant in the absence of evolutionary influences.

Front

What are the five conditions for Hardy-Weinberg equilibrium?

Back

1. Large population size, 2. No mutations, 3. No migration, 4. Random mating, 5. No natural selection.