Variation May Exist Because Environments Have Recently Changed and Genes

question 64

Multiple Choice

Variation may exist because environments have recently changed and genes that were previously beneficial have not yet been eliminated. This may describe

• A) Tay-Sachs disease.
• B) sickle-cell anemia.
• C) non-insulin-dependent diabetes.
• D) P. falciparum malaria.

---

Definitions:

Physiological Needs

Basic physical necessities required for human survival, such as air, water, food, shelter, and sleep, as identified in Maslow's hierarchy of needs.

Lateral Hypothalamus

An area of the brain that plays a significant role in controlling hunger and thirst.

Onset of Eating

Refers to the initiation or beginning of food consumption or an eating episode.

Belonging

The feeling of security and support when there is a sense of acceptance, inclusion, or identity within a group or place.