Figure 1. * After asynchronous disappearance continues as normal embryonic development, even in this case without fragmentation levels, or any other visible anomaly.
1. Two pro-nuclei highlighted in the cell cytoplasm, and their nucleoli also displayed.
2. Pronucleus it was marked yellow in the previous figure (1) disappears before the other. In this case the difference lasted for ~20 minutes.
3. Both pronuclei disappeared.
4. Cleavage occurred normally for two cells.
5. Cleavage occurred normally to four cells; the blastomeres are symmetrical, there is only one core per blastomere without fragmentation signal.