Book excerpt: Genes, Culture, and Human Evolution: A Synthesisis a textbook on human evolution that offers students a unique combination of cultural anthropology and genetics. Written by two geneticists---including a world-renowned scientist and founder of the Human Genome Diversity Project---and a socio-cultural anthropologist. Based on recent findings in genetics and anthropology that indicate the analysis of human culture and evolution demands an integration of these fields of study. Focuses on evolution---or, rather, co-evolution---viewed from the standpoint of genes and culture, and their inescapable interactions. Unifies cultural and genetic concepts rather than rehashing nonempirical sociobiological musings. Demonstrates that empirical genetic evidence, based on modern DNA analysis and population studies, provides an excellent foundation for understanding human cultural diversity.