What is a key feature of artificial selection?

• A. It requires random genetic changes
• B. It is solely based on environmental pressures
• C. It involves human intervention in selecting traits
• D. It eliminates the concept of variation

Answer: (C)

A key feature of artificial selection is that it involves human intervention in selecting traits. This process is intentional and guided by humans who choose specific plants or animals with desirable characteristics to breed. Through selective breeding, humans can enhance certain traits, such as size, color, yield, or resistance to disease, which may not necessarily be favored under natural conditions.

This approach markedly contrasts with natural selection, where environmental pressures determine which traits are passed on. In artificial selection, the choices made by humans direct the evolutionary outcome, allowing for the rapid development of desired phenotypes.

While it is important to recognize that variation still exists and is the basis for selection, artificial selection actively exploits this variation rather than eliminating it. The role of creativity and decision-making in selection enhances the diversity of traits that can emerge in future generations, driven by human preference rather than random chance or environmental factors.