Public Health Nursing Practice Exam

What is an example of a biological variation?

1. Differences in healthcare access

2. Physical traits distinguishing racial groups

3. Variations in health literacy

4. Differences in family structure

The correct answer is: Physical traits distinguishing racial groups

Biological variation refers to the differences in physical and biological attributes that occur among individuals or groups, often influenced by genetic factors. The option that identifies physical traits distinguishing racial groups epitomizes this concept, as these traits can include skin color, hair texture, facial features, and other anatomical characteristics that are largely determined by genetics. Such variations are part of the natural diversity observed in human populations and are significant in fields like epidemiology and genetics, as they can influence health outcomes and predispositions to certain diseases. In contrast, the other options revolve around social, economic, and environmental factors rather than biological characteristics. Differences in healthcare access involve systemic issues related to socio-economic status and geography; variations in health literacy pertain to individuals' ability to understand health information; and differences in family structure relate to cultural and social norms. These aspects are essential to public health but do not fall under the category of biological variation.