On the purely biological front any scientist, unencumbered by political or religious pressure would tell you unequivocally that life begins at the moment of conception.

No, life began, probably just the once, a couple of billion years ago. All that happens at conception is that selections of two genomes are combined to make a new set. Both the sperm and the ovum were already living, and the combination stays living afterwards- in an altered state. I find it wonderful to think that I am a living descendant of that first life- every one of my DNA molecules is a copy (very imperfect!) of the very first one.

But this has no relevance whatsoever to abortion, which is about people, not DNA.