Cleavage Stage, Ovum


Cleavage Stages, Ovum

Ovum Cleavage Stage

Ovum Cleavage Stages

Ovum Segmentation Stage

Ovum Segmentation Stages

Segmentation Stage, Ovum

Segmentation Stages, Ovum

The earliest developmental stage of a fertilized ovum (ZYGOTE) during which there are several mitotic divisions within the ZONA PELLUCIDA. Each cleavage or segmentation yields two BLASTOMERES of about half size of the parent cell. This cleavage stage generally covers the period up to 16-cell MORULA.