D Damo Guest Mar 19, 2009 #1 i think its the different forms like the baby developing like the 3 steps . please help
T *tysci New member Mar 19, 2009 #2 Yep. I am not sure of the exact time spans, but I know for sure that the zygote is the very first cell, that was fertilized by the sperm.
Yep. I am not sure of the exact time spans, but I know for sure that the zygote is the very first cell, that was fertilized by the sperm.