A zygote is alive and human but it is not an organism because it cannot survive independently, it is a parasite.
You can not survive independently either....you live daily on the lives of both plants and animals....you are not self sustaining by any stretch of the imagination...we are all parasites...all life is parasitic to some degree.
And your idiotic claim makes a parasite and in your opinion a non human out of all dependent conjoined twins? You just don't seem to possess the intellectual wattage required to explore your ideas beyond the shiny surface to see how deeply flawed they are just below that surface.... Here, let me help you understand why an unborn is not a parasite, and perhaps at long last help you to come to understand that words have meanings.
First and foremost...biologically speaking a parasite is an organism of one species deriving its nourishment from a host of another species....
Cheng, T.C.,
General Parasitology, p. 7, 1973.
There is a profound difference between an obligatory dependent relationship and a parasitic relationship....ask any pair of conjoined twins.
Second a parasite is an invading organism...come to parasitize the host from the outside...that hardly describes the development of unborns.
Third, a parasite makes direct contact with the host's tissues...either by mouth parts, hooks or suckers...
Fourth, your body usually attempts to isolate itself from a parasite by encapsulating the parasite with connective tissue.
Fifth....when a parasite invades your body, your body responds by sending antibodies which attempt to kill the parasite...
Sixth...a parasite is usually detrimental to the reproductive capacity of the host...while an embryo is the reproductive capacity of the mother incarnate.
Seventh...a parasite is an organism which once entrenched within the host usually stays there for the remainder of its life cycle...or as long as the host survives.
Your arguments are, as always, the same old melodramatic, misinformative, disingenuous drivel that people who don't want to admit their sociopathic position to themselves have been spouting for decades now while the greatest holocaust in human history goes on. Face it, there is no rational, scientifically valid argument in support of your position...the best you can do is bullshit like your "parasite" argument....my bet is that you got that from some pro choice site and never bothered to even try to find out what constitutes and doesn't constitute a parasite....you thought that you had found a shiny new argument and just ran with it, and now that it has been demonstrated to be nothing but misinformation, will you discard it?...of course not...you will save it and attempt to fool someone else with it....which will make you even more guilty of being a liar than you already are.