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The gestation period begins with fertilization, when a sperm cell successfully merges with an egg, forming a zygote that implants in the uterus. It typically lasts for a specific duration depending on the species, with human gestation lasting about 40 weeks. The period ends with childbirth, which involves a series of physiological changes leading to labor and the delivery of the baby. This process is marked by contractions, the dilation of the cervix, and the eventual expulsion of the fetus through the birth canal.

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3mo ago

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