This zygote's cells divide rapidly during this ... where it begins to develop into an embryo. Implantation generally takes place six to 12 days following conception (or five to 15 days after ...

Pregnancy begins when the fertilized egg implants in the uterine lining. Here's what to know about implantation and how long after fertilization it occurs. Reviewed by Rachel Gurevich, RN When you're ...

(B) In the pre-inactivation model, the female zygote inherits a partially silent XP and maintains the silent state throughout pre-implantation development. Silencing becomes globalized and ...