The Selective Advantage Linked to the High Frequency of the Cystic

question 6

Multiple Choice

The selective advantage linked to the high frequency of the cystic fibrosis allele in Caucasians is:

• A) an increased resistance to falciparum malaria
• B) the prevention of excessive water loss associated with certain types of diarrhea
• C) production of an enzyme to break down cholera toxin
• D) increased mucous secretions for the removal of infectious cells
• E) an increased probability of Salmonella infection

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Definitions:

Hindbrain

The posterior part of the brain, including the cerebellum and brainstem, responsible for controlling various basic functions such as respiration and heart rate.

Brain's Primary Functions

The main tasks carried out by the brain, including regulating vital bodily functions, processing sensory information, and overseeing thought, emotion, and memory.

Dorsal

Pertaining to the back or upper side of an organism or structure, opposite of ventral, often used in anatomical descriptions.

Ventral Fibers

Nerve fibers located on the front part of the body, often associated with the transmission of sensory and motor information.