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Biochemistry is the branch of science concerned with the chemical and physicochemical properties, structures, and reactions of biological macromolecules, which include proteins, nucleic acids, carbohydrates, and lipids. It combines principles from biology, chemistry, physics, and mathematics to study how these molecules interact and function in living organisms. In the context of genetics, biochemistry focuses on understanding the chemical basis of genetic information storage, replication, expression, and regulation at the molecular level. Biochemists may investigate the mechanisms of DNA replication, transcription, translation, and gene regulation, as well as the roles of enzymes and other proteins in these processes. Biochemistry also intersects with biotechnology to develop new technologies for diagnosing and treating genetic diseases, developing novel drugs and therapies, engineering organisms with desirable traits, and producing useful biological products through fermentation or other bioprocesses. Overall, biochemistry provides a fundamental understanding of the molecular basis of life, which is essential for advances in genetics, biotechnology, and related fields.