9 h 43 m, 22 agos 2002 año - The zygote has some features.

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This is an important event because the eyes, ears, and arms develop. Also, the baby's brain and spinal cord develops. The heart and other organs form. This usually happens during week 6.

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7 dic 2017

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Growth and Development Timeline

“Fetal Development: What Happens during the 1st Trimester?” ...

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