Hm? It has been debated for millenia as to when the soul enters the body. Not quite so long in jurisprudence as to when personal rights attach but at least back to the Roman empire. I would argue only that we should treat both instances as at conception because we don't know. We can only say with certainty that in either case the question doesn't arise before conception. Believing wrongly has difficult consequences. How specific cases should be addressed after that point is another matter.
