Answer:
Stage Days (approx) Events
1 1 (week 1) fertilized oocyte, zygote, pronuclei
2 2 - 3 morula cell division with reduction in cytoplasmic volume, blastocyst formation of inner and outer cell mass
3 4 - 5 loss of zona pellucida, free blastocyst
4 5 - 6 attaching blastocyst
Explanation:
I hope this helps!
