👉 The term "postembryonic" refers to the period of time from fertilization until the first stage of development, which is known as the blastocyst. This stage marks a significant milestone in the development of an embryo or fetus, where it begins to develop into its final form. Postembryonic refers to the entire process that occurs during this time, including the formation and maturation of various structures within the embryo. It encompasses the stages of fertilization, implantation, and early
