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Physical Anthropology, also known as biological anthropology, is a subfield of anthropology that focuses on the biological and physiological aspects of the human species, their evolution, and their variation across time and space. It combines theoretical knowledge with practical applications, and involves the study of human genetics, fossil records, primatology, human osteology, and forensic anthropology. Both theory and practice in physical anthropology help in understanding the biological roots of human behavior, adaptation, and diversity. One of the fundamental theoretical aspects of physical anthropology is the study of human evolution. The discipline draws heavily on Darwin’s theory of evolution by natural selection to explain how modern humans emerged from ancestral primates. The fossil record, particularly of hominins like *Australopithecus*, *Homo habilis*, *Homo erectus*, and *Homo sapiens*, forms the core of evolutionary study. Comparative analysis of fossil morphology allows physical anthropologists to trace lineage, identify evolutionary adaptations, and estimate the age of different species using various dating techniques. The theory of evolution is supported by findings in molecular biology, such as mitochondrial DNA studies, which show genetic links between modern humans and extinct hominin species like Neanderthals. Another core theoretical concern is the concept of human variation. Physical anthropologists study genetic and phenotypic variation among different populations. These variations, such as skin color, body proportions, blood types, and susceptibility to certain diseases, are adaptations to environmental pressures. For instance, Bergmann’s and Allen’s rules explain how body size and limb length vary according to climatic conditions. The study of human adaptation also involves examining how people have adapted to high altitudes, extreme temperatures, and different diets. Understanding such biological diversity helps debunk race as a biological concept and redefines it as a __________ __________ ____ _______ _______ _______ ____ ___ ______ _____.
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