DAY 2 Uterus DAY 1 DAY 3-4 First cleavage 2-cell stage 4-cell stage 8-cell uncompacted DAY 4 morula 8-cell Fertilized egg compacted morula (zygote) DAY 5 Trophectoderm vary Earl -Blastocoel DAY O blastocyst Inner Fertilization cell mass DAY 6-7 Zona pellucida Late. ste blastocyst OvulatIon hatching)DAY8-9 Epiblast ocyte Implantation of the blastocyst Hypoblast