👉 Zoogenesis is a process that occurs in all vertebrates, including humans and certain other animals. It refers to the development of a zygote from an egg or sperm cell, which then implants itself into the developing embryo. In this process, the zygote is formed through a series of events called meiosis. During this stage, the zygote undergoes a series of rounds of mitosis (the process by which cells divide) and cytokinesis (the final step in cell