Let me share with you a comparison between Zygote and Embryo.
| Aspect | Zygote | Embryo |
| Formation | Formed by the fusion of sperm and egg during fertilization. | Develops from the zygote after several rounds of cell division and differentiation. |
| Number of cells | Initially a single cell. | Multicellular, consisting of multiple cells. |
| Developmental Stage | Represents the earliest stage of development. | Follows the zygote stage and precedes later stages like the fetus. |
| Implantation | Zygote may undergo several cell divisions before implanting into the uterus. | Embryo implants into the uterus for further development. |
| Size | Initially small, consisting of only a few cells. | Grows in size as cell division and differentiation progress, forming a recognizable structure. |
| Cell Potency | Totipotent, capable of giving rise to all cell types, including both embryonic and extraembryonic tissues. | Pluripotent, with the ability to differentiate into many cell types but not capable of forming extraembryonic tissues. |
| Developmental period | The zygote stage is relatively short. | The embryonic stage is a more extended period with distinct developmental milestones. |
| Stage in Reproduction | Early stage in the reproductive process. | Intermediate stage between the zygote and fetus in the reproductive process. |