Final answer:
Organogenesis is the process by which major organs develop in the embryo by week 10 of gestation through cell growth and differentiation.
Explanation:
Organogenesis is the process by which the three germ layers of the embryo differentiate and further specialize to form the major organs of the body. During weeks 3 to 8 following fertilization, most organs start to develop and continue growing during the fetal period. By the end of week 10 of gestation, all major organs are formed through cell growth and differentiation.
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