Final answer:
Biocultural anthropology rejects the genetic system of inheritance as the only means of understanding human evolution because it takes into account both biology and culture in shaping human behavior and evolution.
Step-by-step explanation:
The reason biocultural anthropology rejects the genetic system of inheritance as the only means of understanding human evolution is because it acknowledges the importance of both biology and culture in shaping human behavior and evolution. Biocultural anthropology recognizes that human evolution is a complex process influenced by both genetic factors and cultural practices. It takes into account how cultural practices, such as diet, social organization, and belief systems, can have a profound impact on human biology and evolution. By studying both biology and culture, biocultural anthropology offers a more comprehensive understanding of human evolution.