This is directly related to the practice of transferring multiple embryos at embryo transfer. Implantation is critical to the survival and development of the early human embryo. The peritoneum develops ultimately from the mesoderm of the trilaminar embryo. The development of the embryo and gametophytes is called embryology. All of these help to define the fate of undifferentiated cells in the embryo. The morpholino is able to integrate into most cells of the embryo. This determines the genetic sex of the embryo. Neurogenesis primarily occurs in the embryo of most organisms. This represents the point of transition between the hindgut and the ectoderm in the embryo. Seeds protect and nourish the embryo or young plant. There is not enough DNA intact to guide the production of an embryo. Nodal cilia are only present in the early developing embryo. The villi begin to branch and contain blood vessels of the embryo. Seeds are solitary with no albumen around the embryo. This creates a one-cell embryo.