Unit 9 Study Guide - Biology 1 PLC - Pre-AP Version

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What is Natural Selection?

Back

Natural Selection is the process where better adapted organisms survive and pass their traits to offspring.

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Which moth will be more successful in a soot-covered environment?

Back

The dark moth will be more successful in a soot-covered environment.

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What defines a species?

Back

A species is a group of organisms that can mate with each other and produce fertile offspring.

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What is an epidemic?

Back

An epidemic is a widespread occurrence of disease.

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What is Directional Selection?

Back

Directional Selection is a type of natural selection where one extreme phenotype is favored over others.

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What is the difference between artificial selection and natural selection?

Back

Artificial selection is the process by which humans breed organisms for desired traits, while 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 the bottleneck effect?

Back

The bottleneck effect is a sharp reduction in the size of a population due to environmental events or human activities, leading to a loss of genetic diversity.

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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 stabilizing selection?

Back

Stabilizing selection is a type of natural selection that favors average phenotypes and reduces variation.

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What is disruptive selection?

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Disruptive selection is a type of natural selection that favors extreme phenotypes over average ones.