Which of the Following Statements About Sleep Schedules Is True

question 65

Multiple Choice

Which of the following statements about sleep schedules is true?

• A)They are historically and socially variable.
• B)They are biologically preordained.
• C)They are determined by infradian rhythms.
• D)They are unaffected by technology.

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Definitions:

Habitat Isolation

A form of reproductive isolation where different species live in different habitats and do not meet, thus preventing mating.

Mechanical Isolation

A form of reproductive isolation where physical differences in the reproductive organs of different species prevent interbreeding.

Hybrid Sterility

A condition in hybrid animals or plants where they are unable to produce offspring due to genetic and chromosomal differences between the parents.

Hybrid Inviability

Hybrid inviability is a postzygotic barrier where hybrid offspring fail to survive to maturity, reducing the chances of genes being exchanged between different species.