An Allele Is

question 89

Multiple Choice

An allele is

• A) any section of DNA.
• B) a gene.
• C) a specific section of a chromosome.
• D) an alternate version of a gene.
• E) a pair of genes.

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Definitions:

Motor Root

The part of a spinal nerve that carries motor signals from the spinal cord to the muscles.

Golgi Tendon Reflex

A protective mechanism that prevents muscle damage during excessive force generation by causing muscle relaxation.

Muscle Spindle

Three to 10 specialized muscle fibers supplied by gamma motor neurons and wrapped in sensory nerve endings; detects stretch of the muscle and is involved in maintaining muscle tone.

Reflex Arc

A neural pathway that mediates an immediate response to a stimulus without conscious brain involvement.