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Cell Division
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Script: Approximately 24 to 30 hours after fertilization, the zygote completes its first cell division. Through the process of mitosis, one cell splits into two, two into four, and so on. | ||
| All ages referenced to fertilization, not last menstrual period. |
Fertilization 1
Fertilization 2
Cell Division
The Morula and Blastocyst
3 Billion Base Pairs per Cell
Amnion and Germ Layers
