When Nondisjunction Occurs Early in Embryogenesis Rather Than Gametogenesis, What

question 24

Multiple Choice

When nondisjunction occurs early in embryogenesis rather than gametogenesis, what would you expect in the resulting karyotype?

• A) uniparental disomy
• B) monosomy
• C) mosaicism
• D) trisomy
• E) random X- inactivation

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Definitions:

Gastrocnemius

The large muscle in the calf of the leg.

Muscles Contract

The process by which muscle fibers shorten and generate force, typically in response to a signal from the nervous system.

Muscle Tone

A state of muscle contraction in which a portion of the fibers are contracted while others are at rest.

Extensor Muscle

A muscle that extends or straightens a limb or part of the body, working in opposition to flexor muscles.