I learned a while ago that there is no magic moment between fertilization and birth that turns a person into a person.
The sad fact (sarcasm) is that you are a person from the moment your father's sperm is united with your mother's egg.
Thus: Personhood.
The Prolife group by that name is only telling you what any embryologist (or any person who knows how to make a baby) can tell you, truthfully: nothing justifies the killing on an innocent and defenseless person, no matter what their stage of development.
Any post-abortive mother can tell you that there was no "choice" for their aborted child.
I could address every point made in the Huffington post article, but with this in mind, there's no need for me to do that.
The following quotes are from Huffington Post, Wikipedia, and National Geographic.
"Personhood, if you've never heard of it before, is the movement to give fertilized eggs all the same rights as people -- two cells would have the same rights as you or your best friend. The group behind this movement, Personhood USA, is based right here in Denver. Every couple of years they try and write their fertilized egg = person ideas into my Constitution. The last couple of times most Coloradans have voted "NO" on these amendments and they've failed. But this year things are different."
http://m.huffpost.com/us/entry/5870476
Why "two cells" = person:
"Human fertilization is the union of a human egg and sperm, usually occurring in the ampulla of the uterine tube. The result of this union is the production of a Zygote, or fertilized egg, initiating prenatal development."
"Such zygotes contain DNA derived from both parents, and this provides all the genetic information necessary to form a new individual."
"An embryo is a multicellular diploid eukaryote in its earliest stage of development, from the time of fertilization until birth, hatching, or germination. In humans, it is called an embryo until about eight weeks after fertilization (i.e. ten weeks after the last menstrual period or LMP), and from then it is instead called a fetus."
"In biological terms, however, prenatal development is a continuum, with no clear defining feature distinguishing an embryo from a fetus. The use of the term "fetus" generally implies that a mammalian embryo has developed to the point of being recognizable as belonging to its own species, and this is usually taken to be the 9th week after fertilization. A fetus is also characterized by the presence of all the major body organs, though they will not yet be fully developed and functional, and may not all be situated in their final anatomical location.'
"...an intricate set of plans created at the moment of conception."
http://m.youtube.com/watch?v=s0WM9oRr07w
