Biology Keystone Exam Vocabulary Review: Unit 7

A gene pool consists of

• all of the genes, including all the different alleles, that are present in a population

• some of the genes, including the different alleles, that are present in a population

• all of the genes that are present in all populations

• all of the genes, including all the different alleles, that are present in all populations

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The number of times a particular allele appears in a gene pool is known as the

• population of the allele

• relative percentage of the allele

• frequency of the allele

• evolution of the allele

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Evolution can be defined as a ____________

• change in the frequency of an allele in a population over time

• change in the frequency of reproduction in a population

• change in the frequency of an allele in an individual

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What do we a call an anatomical, physiological, or behavioral change that improves a populations ability to survive?

• Adaptation

• Coherent Change

• Selective Breeding

• Adamant Change

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Genetic drift is change in the allele frequency of a population due to...

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

What is the name of the process in which the most favorable traits are passed onto the next generation?

• Genetic drift
• Gene pool
• Gene flow
• Natural selection

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What process leads to a new species and often begins by a portion of a population become physically or geographically isolated?

• Speciation

• Selective breeding

• genetic change

• resistance

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The term for the formation of new and genetically distinct species over the course of evolution is...

• speciation

• biological species concept

• reproductive barrier

• natural selection

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Structures that are inherited from a common ancestor are homologous.

• True
• False

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Bird wings and butterfly wings are an example of

• Homologous structure
• Analogous structure
• Mimicry
• Camoflague

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