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Genetics is the scientific study of genes, heredity, and variation in organisms. It explores how traits are passed from one generation to the next and how genetic information determines the structure, development, and function of an organism. In the context of cellular biology, genetics focuses on understanding the role of genes at the cellular level, including gene expression, DNA replication, and repair mechanisms. As a component of biochemistry, genetics investigates the chemical basis of heredity, examining how genetic information is encoded in DNA molecules, transcribed into RNA, and translated into proteins. Within life science, genetics offers insights into evolutionary processes, population dynamics, and molecular mechanisms underlying various biological phenomena. By elucidating the fundamental principles governing gene organization, regulation, and function, genetics serves as a crucial link between cellular biology, biochemistry, and life sciences, providing a unified framework for understanding complex biological systems at multiple levels of organization.