_____ begins at about Day 6 and is complete by about Day 11.

Question

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Implantation typically occurs around Day 6-7 after fertilization and is completed by Day 11. The embryonic period (A) follows implantation and lasts until the end of the 8th week after fertilization, while the fetal period (C) begins at the end of the embryonic period and lasts until birth. Conception (D) refers to the moment when the sperm fertilizes the egg, which occurs before implantation.

_____ Begins at About Day 6 and Is Complete by About