Keywords: Embryogenesis.jpg Picture illustrates the ontological status of the preembryo embryo and fetus Dr Ford 1988 has suggested the term proembryo for the preembryo stage of development It is the preimplantation post fertilization stage in the human life cycle where we have at least one new human being but not yet an individual human being and thus not yet a person From the formation of the primitive streak shortly following the completion of implantation individuality has been established however there is debate as to whether this individual human being is or should be considered a person o indicates the natural standard reproductive and embrogenic pathway while mz indicates all the possible pathways for a monozygotic twin /c indicates a clone created by either SCNT or ANT ch indicates all the possible pathways for a chimeric individual dz indicates the pathway of a dizygotic twin en indicates an enucleated oocyte m indicates a hydatidiform mole cm indicates a complete hydatidiform mole pm indicates a partial hydatidiform mole and p indicates parthenogenesis O indicates an oocyte Z indicates a zygote M indicates a morula B indicates a blastocyst E indicates an embryo F indicates a fetus I indicates a live born individual person PM indicates a partial hydatidiform mole CM indicates a complete hydatidiform mole T indicates a teratoma The colors represent the maternal and paternal genetic contributions There is an error which needs to be fixed the arrow indicating fetal mortality needs to be pointing to still birth at this stage mortality is no longer considered a spontaneous abortion Created by Anthony Giovanone Saint Michael's College Vt Graphic design by Hound Dog Graphics Saratoga Springs NY Contact agiovanone smcvt edu en wikipedia Sreejithk2000 CommonsHelper 2006-08-02 Antrocks wikipedia en Antrocks original upload log page en wikipedia Embryogenesis jpg 2006-08-02 20 28 Antrocks 2424×2859× 3428355 bytes <nowiki>Created by Anthony Giovanone Saint Michael's College Vt Graphic design by Hound Dog Graphics Saratoga Springs NY</nowiki> Embryology Teratoma |