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Evolutionary psychology explores the evolutionary roots of mental and behavioral patterns, and posits that common patterns may have emerged because they were highly adaptive for humans in the environments of their evolutionary past—even if some of these patterns are maladaptive in today's environments. Fields closely related to evolutionary psychology are animal behavioral ecology, human behavioral ecology, dual inheritance theory, and sociobiology. Evolutionary psychology is distinct from, although related to, behavioral genetics. Memetics, founded by Richard Dawkins, is a related but competing field that proposes that cultural evolution can occur in a Darwinian sense but independently of Mendelian mechanisms; it therefore examines the ways in which thoughts, or memes, may evolve independently of genes.