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Developmental biology is the scientific study of the processes and mechanisms responsible for the growth, differentiation, and specialization of cells, tissues, and organs in living organisms. It examines how genetic information and environmental factors interact to shape the development of an organism from embryo to adult. This field is closely related to biochemistry, as it involves understanding the molecular and cellular mechanisms that drive these processes. In this hierarchy, under biochemistry, developmental biology focuses on the chemical and physical changes that occur during development, providing insights into how genes regulate the formation of complex structures in organisms. It also has connections to science and biotechnology, as its findings have implications for medical research, agriculture, and other fields where an understanding of growth and differentiation is crucial.