17 дек 2002 г. - 1st Trimester Week 1-3
Описание:
One of my mom's egg gets fertilized by my dad's sperm during sexual reproduction. As she is pregnant her period stops and the fertilized egg, also known the zygote goes down her Fallopian tube towards uterus taking couple of days. The zygote divides into cells thus beginning the embryonic stage.Добавлено на ленту времени:
Дата:
17 дек 2002 г.
Сейчас
~ 22 г назад