If a Trait Has a Heritability of 0

question 15

Multiple Choice

If a trait has a heritability of 0.5, this means that

• A) all variation in the population is caused by genotypic differences.
• B) all variation in the population is caused by environmental differences.
• C) the variation in the population is the result of epigenetic effects.
• D) the genotype and environment contribute equally to the variation seen in the population.
• E) None of these is true.

---

Definitions:

Biotransformation

The chemical alteration of substances within the body, such as the breakdown of medications by the liver into forms that can be eliminated.

Renal Insufficiency

A medical condition where the kidneys are unable to function adequately, resulting in the accumulation of waste products and fluids in the body.

Alkaline Medications

Drugs that increase the pH level of body fluids, often used to neutralize stomach acid or manage metabolic acidosis.

Gastric Mucosa

The mucous membrane lining the stomach, containing cells that produce stomach acid and enzymes necessary for digestion.