Huntington Disease Is Inherited in Humans as an Autosomal Dominant

question 6

Essay

Huntington Disease is inherited in humans as an autosomal dominant gene. Affected
individuals show progressive brain deterioration from cell death in the cerebral cortex. Onset of the disease usually occurs between ages 30 and 50. Give two possible reasons for the observed variation in the age of onset of this disease.

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Definitions:

Ostracism

The exclusion from a society or group, typically as a method of punishing or deterring undesirable behavior.

Brain's Reaction

The response of the brain to internal or external stimuli, involving neural and chemical processes.

Activity in Regions

Refers to the level of biochemical or electrical action occurring within specific areas of the brain or body.

Pain

A distressing feeling and emotional response linked to real or possible damage to body tissues.