Not that it's a terrible crucial point, but yes, there are no nerve cells at conception--that is what the hubbub about stem cell research is about. There are only stem cells at conception.
I do not agree that this should be the compelling criteria, I was just citing a particular issue, but if you think it is, than do you concur that a child may be aborted before it's 43rd day?
Once again you are wrong.
And it is basic. You don't even know what conception means.