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The Endowment for Human Development
The Endowment for Human Development
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To the Earth and Back


From The Biology of Prenatal Development.Buy Now

Script: Si l'on pouvait dérouler l'ADN total des 100 billions de cellules de l'être humain, il s'étendrait sur une longueur de plus de 100 milliards de kilomètres. Ceci représente 340 fois la distance aller-retour entre la terre et le soleil.

All ages referenced to fertilization, not last menstrual period.
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Ready for Birth
Ready for Birth
DNA
DNA
To the Earth and Back
To the Earth and Back
Fertilization 1
Fertilization 1
Fertilization 2
Fertilization 2
Cell Division
Cell Division
Free resources and training for educators
Buy the Biology of Prenatal Development DVD