Image:Embryogenesis1.jpg

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[edit] Summary

Picture illustrates the ontological status of the preembryo, embryo, and fetus. Dr. Ford (1988) has suggested the term proembryo for this 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 determined, 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 embryogenic 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.

Created by Anthony Giovanone, Saint Michael's College, Vt. Graphic design by Hound Dog Graphics, Saratoga Springs, NY. Contact agiovanone@smcvt.edu.

[edit] Licensing

I, the copyright holder of this work, hereby release it into the public domain. This applies worldwide.

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File history

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	Date/Time	Dimensions	User	Comment
current	19:28, 8 August 2006	1,220×1,430 (359 KB)	Antrocks (Talk \| contribs)	(Created by Anthony Giovanone, Saint Michael's College, Vt. Graphic design by Hound Dog Graphics, Saratoga Springs, NY. Contact agiovanone@smcvt.edu.)
	22:49, 2 August 2006	1,212×1,430 (367 KB)	Antrocks (Talk \| contribs)	(Created by Anthony Giovanone, Saint Michael's College, Vt. Graphic design by Hound Dog Graphics, Saratoga Springs, NY. Contact agiovanone@smcvt.edu. )