Final answer:
Cellular differentiation is vital in developing specialized cells for specific functions in the human body.
Explanation:
Cellular differentiation is crucial for the development of a fully formed human infant because it results in unspecialized cells becoming specialized to perform specific functions in the body. During differentiation, genes are activated or inactivated, leading to the development of structures and abilities suited for specialized roles in the body. For example, in the ectoderm germ layer, cells differentiate to form the skin and nervous system, while the mesoderm forms bones and muscle tissue.
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