20 h 30 m, 27 abr 2002 año - Weeks 1-3

Descripción:

Millions of sperm cells are released into the fallopian tube of the female during ovulation. These cells then begin to try to penetrate the egg to create a baby. However, one only sperm cell will bond with the egg to form a zygote.

Añadido al timeline:

7 dic 2017

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Fetal Development Timeline

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