Describe how the definitions of race as used over the years in the United States reveal cultural viewpoints rather than fixed biological characteristics

What will be an ideal response?

Across the decades, the government has used different classifications systems to categorize people such that the same individual could, over the course of a lifetime, fall into different categories. In addition, some groups are categorized into groups on the basis of illogical rules, such as the "one drop" rule that people use: one drop of "black" blood makes one black, but one drop of "white" blood doesn't make one white. Further, some categories (e.g., Hispanic) are used to indicate race in certain circumstances but not in others. Finally, the genetic differences across the so-called races do not reliably distinguish people in different groups. There may be patterns, but there are people who don't easily fall into a given category.