You know mathematically that there is only one logical point at which life begins, and that is conception. It is a fact that abortion kills a human life.What this would imply that life ends at the death of the last cell.
And there are plenty more implications. Consider the fact that half of the time that conception occurs, the zygote passes from the mother's body without coming to term even without artificial abortion! Think of all the homicide investigations that would be required.
And what of those who absorb a twin in the womb...manslaughter charges?
Attempts at politically defined science are absurd. Legal banning of abortion is one thing; trying to legally define reality is another.