results in development of results in development of multicellular organism development embryo development GO:0009790 GO:0009795 Wikipedia:Embryogenesis biological_process The process whose specific outcome is the progression of an embryo from its formation until the end of its embryonic life stage. The end of the embryonic stage is organism-specific. For example, for mammals, the process would begin with zygote formation and end with birth. For insects, the process would begin at zygote formation and end with larval hatching. For plant zygotic embryos, this would be from zygote formation to the end of seed dormancy. For plant vegetative embryos, this would be from the initial determination of the cell or group of cells to form an embryo until the point when the embryo becomes independent of the parent plant. embryogenesis embryonal development embryogenesis and morphogenesis anatomical structure development embryo