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Developmental biology is the scientific study of the processes and mechanisms underlying the growth, differentiation, and specialization of cells, tissues, and organs in living organisms. It explores how genetic information and environmental factors interact to shape the development of an organism from fertilized egg to adult. This field is closely related to zoology as it primarily focuses on animals, including their embryonic stages and the changes they undergo during their lifecycle. Developmental biology provides insights into the evolution of species and contributes to our understanding of congenital disorders and potential therapies. It represents a crucial area of research within life sciences and is an essential component of scientific inquiry in the broader context of science.