-
4 BCE
Step 4
Blastocyst is supplied by hCG to maintain its survival -
1 BCE
Step 1
Morula goes down fallopian tube into uterus -
2
Step 2
Ovulation initiates, progesterone and oestrogen surges from the corpus luteum, in which prepares the endometrium -
3
Step 3
Cell goes into endometrium and surge of progesterone and oestrogen supplies the egg.