Genes Are Responsible for the Expression of Most Human Traits

question 173

Multiple Choice

Genes are responsible for the expression of most human traits. However, if we see a particular trait (e.g., hair colour) we cannot be certain that it is due to genes. Why?

• A) natural selection always alters the genotype
• B) social Darwinism can come into play
• C) genotype is not equal to phenotype
• D) genetic determinism is weak
• E) traits are not inherited

---

Definitions:

Suicide

The act of intentionally causing one's own death, often as a result of mental illness such as depression or schizophrenia.

Nutraceutical

A food product or food ingredient that purports to provide health and medical benefits, including the prevention and treatment of disease.

Mild Depression

A less severe form of depression where individuals may experience persistent sadness, hopelessness, and lack of interest or pleasure in daily activities, but are still able to function.

L-tryptophan

An essential amino acid used by the body to help make proteins and certain brain-signaling chemicals, including serotonin.