A Genetic Mutation of the Hypocretin Gene in Mice Results

question 33

Multiple Choice

A genetic mutation of the hypocretin gene in mice results in

• A) intrusion of slow-wave sleep during the awake period.
• B) symptoms of narcolepsy.
• C) undereating and weight loss.
• D) prolonged sleeping.
• E) overeating.

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Definitions:

Ice-Core Data

Information obtained from cylindrical sections of ice drilled from glaciers and ice sheets, which provide valuable records of past climates.

Atmospheric Warming

The rise in Earth's average temperature due to increases in greenhouse gases, leading to climate change and variability in weather patterns.

Caliche

A sedimentary rock, a hardened natural cement of calcium carbonate that binds other materials—such as gravel, sand, clay, and silt.

Desert Pavement

A natural surface covering of closely packed rock fragments found in desert regions, formed by the removal of finer particles by wind and water.