If a Geneticist Describes a Trait as Being 70% Penetrant

question 7

Multiple Choice

If a geneticist describes a trait as being 70% penetrant, what would they mean?

• A) The expression of the trait varies by individual
• B) It is lethal in 30% of the individuals who have the trait
• C) Only 70% of the individuals who carry the trait express the trait
• D) The trait is present in 70% of the population

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Definitions:

Limbic System

A complex system of nerves and networks in the brain, involving various areas near the edge of the cortex concerned with instinct and mood. It controls the basic emotions (fear, pleasure, anger) and drives (hunger, sex, dominance, care of offspring).

Burst Activity

Rapid firing of neurons in the brain, typically associated with specific behaviors or responses to stimuli.

Daily Life

Refers to the routine activities, tasks, and experiences that constitute an individual's regular day-to-day existence.

Narcolepsy

A sleep disorder marked by excessive daytime sleepiness and uncontrollable episodes of falling asleep, often accompanied by sudden muscle weakness.