At the moment of conception it is, biologically, a human entity. I don't know of any other fair way to define that point other than by what it actually is. It would just be arbitrary otherwise, and when it comes to defining another being's humanity, history has shown us that being arbitrary on this can lead to horrific things. (think holocaust, slavery, the slaughtering of indians in the new world, etc... all in the name that these people weren't actually "human")
"Of course, everyone will claim they respect someone who tries to speak the truth, but in reality, this is a rare quality. Most respect those who speak truths they agree with, and their respect for the speaking only extends as far as their realm of personal agreement. It is less common, almost to the point of becoming a saintly virtue, that someone truly respects and loves the truth seeker, even when their conclusions differ wildly."
-walsh
-walsh