The __________period refers to the first 2 weeks after fertilization.

Question

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The germinal period is the initial 2 weeks after fertilization during which the zygote undergoes cell division and forms a blastocyst. This period culminates with implantation of the blastocyst into the uterine lining. The embryonic period then follows, which lasts from the third week through the eighth week of development. The fetal period then follows until birth.

The __________Period Refers to the First 2 Weeks After Fertilization