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Physical and motor development in children is a continuous process influenced by the interaction of heredity and environment. Physical development refers to changes in body size, structure, and physiological functioning, while motor development involves the acquisition of skills related to movement, coordination, balance, and control of muscles. Both heredity and environment play significant roles, and neither works independently. Their combined effects determine the pace and quality of a child's overall development. Heredity refers to the genetic characteristics inherited from parents. It establishes the biological foundation upon which growth and development occur. Genes determine many physical traits such as height, body build, skin colour, eye colour, hair texture, and the potential rate of growth. Children inherit genetic patterns that influence the development of bones, muscles, nervous system, and endocrine glands, all of which are essential for physical and motor development. The maturation of the nervous system is largely controlled by heredity. Motor skills such as sitting, crawling, standing, walking, and running emerge according to a genetically programmed sequence. Although the timing may vary slightly, most children follow a similar developmental pattern because of inherited biological mechanisms. Heredity also influences muscle tone, coordination, reflexes, and physical strength, which contribute to _________ __________ _____ _________ ____ __________ ____ ______ _______ ________.
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