Within the first twelve weeks of development, the basis for organ formation is established. This process is called

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During the first twelve weeks of development, the embryo undergoes the process of organogenesis, which involves the formation of the basic structures of the organs. Embryogenesis refers to the overall process of development from fertilization to birth, while implantation is the attachment and embedding of the embryo in the uterine lining. Gastrulation is an earlier stage of development that occurs shortly after fertilization, involving the formation of the three primary germ layers.

Within the First Twelve Weeks of Development, the Basis for Organ