And it's true that the DNA in a person´s appendix, eye, lung or zygote is all the same; but any scientist who cannot tell the difference between an appendix cell and a zygote is an incompetent or a fraud.
The zygote´s DNA is sometimes compared to a blueprint, but it is far more than a blueprint. If you take a blueprint plant it, and nourish it, it will never grow, nor be anything more than a blueprint. But the zygote, implanted and nourished in its proper environment, grows and develops into an embryo, a fetus, a neonate, a toddler, an adolescent: all these ---zygote, embryo, fetus, toddler, and adolescent ---being stages in a human being´s life.
Every person around you as once a zygote. That´s what you were on Day One of your life.
The whole debate makes me wonder whatever happened to sex ed? A lot of people apparently still don´t know where babies come from.