Attempts to Identify Individual Genes Associated with Addiction Have Found

question 43

Multiple Choice

 Attempts to identify individual genes associated with addiction have found ____.

• A) many genes, each with a small effect
• B) a small number of genes with limited cumulative effects
• C) many genes, each with a substantial effect
• D) a small number of genes with substantial cumulative effects

---

Definitions:

First-Cousin Marriage

A marriage between individuals who have one set of grandparents in common, legally and culturally allowed in some societies but prohibited in others.

Birth Defects

Physical or biochemical abnormalities present from birth, which can cause physical or mental disabilities.

Infant Mortality

The death rate of infants under one year of age, a significant indicator of health care quality in a region.