If a Geneticist Describes a Trait as Being 70% Penetrant

question 36

Multiple Choice

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

• A) Individuals with the trait show variation in expression.
• B) It is lethal in 30% of the individuals who have the trait.
• C) Only 70% of the individuals who carry the allele(s) for a trait express the trait.
• D) The trait is present in 70% of the population.

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Definitions:

pH

A scale used to specify the acidity or basicity of an aqueous solution, with values ranging from 0 (highly acidic) to 14 (highly basic) and 7 being neutral.

Hydrochloric Acid

Hydrochloric Acid is a strong, corrosive acid found in the stomach that aids in digestion by breaking down food and killing pathogens.

Sodium Hydroxide

A highly caustic metallic base and alkali salt, commonly used in industrial processes and as a drain cleaner.

Buffer

A substance in a solution that tends to lessen the change in hydrogen ion concentration (pH) that otherwise would be produced by adding an acid or base.