In human female the blastocyst
forms placenta even before implantation
gets implanted into uterus 3 days after ovulation
gets nutrition from uterine endometrial secretion only after implantation
gets implanted in endometrium by the trophoblast cells.
When sex is determined at the time of fertilization, it is known as
The fertilized egg divides by the process of
Cleavage is found in
Egg undergoes cleavage and forms
Fertilization restores