I suppose you are an expert on when exactly a human life begins? Please, share with us that information, complete with your peer-reviewed research.
I'm pro choice on the matter and would be glad to share with you information from the
embryology textbooks I have. Some old some new written in my notebook off to the side here.
1. ''The scientific answer is that
the embryo is a human from the time of fertilization because of it's human chromosomal constitution. The zygote is the beginning of a developing human.''
Keith L. Moore, T.V.N Persaud, Mark G. Torchia, Before We Are Born: Essentials of Embryology, 8th edition. Philadelphia, PA: Saunders, 2013. p.327
2. “Fertilization is the process by which male and female haploid gametes (sperm and egg) unite to
produce a genetically distinct human individual.”
Signorelli et al., Kinases, phosphatases and proteases during sperm capacitation, CELL TISSUE RES. 349(3):765 (Mar. 20, 2012)
3. “
A Human begins to exist at fertilization, the process during which a male gamete or sperm (spermatozoo developmentn) unites with a female gamete or oocyte (ovum) to form a single cell called a zygote. This highly specialized, totipotent cell marked the beginning of each of us as a unique individual.” “A zygote a new human'' (i.e., an embryo).”
Keith L. Moore, The Developing Human: Clinically Oriented Embryology, 7th edition. Philadelphia, PA: Saunders, 2003. pp. 16, 2.
4. “In this text, we begin our description of
the developing human with the formation and differentiation of the male and female sex cells or gametes, which will unite at fertilization to initiate the embryonic development of a new individual. … Fertilization takes place in the oviduct … resulting in the formation of a zygote containing a single diploid nucleus. Embryonic development is considered to begin at this point… This moment of zygote formation may be taken as the beginning or zero time point of embryonic development.
Essentials of Human Embryology, William J. Larsen, (New York: Churchill Livingstone, 1998), 1-17.
5. “The
development of a human begins with fertilization, a process by which two highly specialized cells, the spermatozoon from the male and the oocyte from the female, unite to give rise to a new organism, the zygote.''
Langman, Jan. Medical Embryology. 3rd edition. Baltimore: Williams and Wilkins, 1975, p. 3
That about wraps it up. No need to be dishonest to our opponents in the abortion debate anymore. Even without dipping into embryology, we known by the basic law of biogenesis taught in elementary school that the offspring of two humans must be of the human species. It can't be a cat or a dog or a monkey or something. It has to be
a human and nothing else.
Your Size, level of development, environment, and degree of dependency, does
not determine what species you belong to. So no matter how much some pro choicers on our side want to compare construction to development is not going to magically defeat the 40+ year scientific fact that the unborn are humans throughout all stages of development. It's done and settled. Nothing more nothing less.
If you're pro choice,
you support killing humans on demand. The discussion is mainly about personhood now which I'm not going to get into here. You can't get to that point if both debate participants deny what it is that is killed in abortion every time.