zygotas

A zygote is the initial cell formed when two gametes (sex cells), such as a sperm and an egg, fuse during sexual reproduction. This fusion process, known as fertilization, results in a single diploid cell containing genetic material from both parents. The zygote is the very first stage of development for a new organism.

Following fertilization, the zygote undergoes a series of rapid cell divisions called cleavage. These divisions occur without significant growth of the overall cell mass, creating a cluster of smaller cells. This early stage of embryonic development is crucial for establishing the foundational structure of the future organism. The genetic blueprint within the zygote dictates the organism's traits and development. As cell division continues, the zygote differentiates into specialized cells that will eventually form tissues, organs, and organ systems. The successful development from zygote to a mature organism is a complex and precisely regulated process.