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Changes in Lifestyles, Population Size, Society's Attitudes, Educational Status and Marital

question 27

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Changes in lifestyles, population size, society's attitudes, educational status and marital status are all examples of demographic trends in the general environment.


Definitions:

Microevolution

Evolutionary change within a species or small group of organisms, especially over a short period.

Hybrid Inviability

A postzygotic reproductive isolating mechanism in which the embryonic development of an interspecific hybrid is aborted.

Mutation

A change in the DNA sequence within an organism's gene or chromosome, leading to variations in trait expression and possibly to different phenotypes.

Habitat Isolation

A type of prezygotic barrier where two species that could interbreed do not, because they inhabit different habitats and rarely encounter each other.

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