[bcdtttt]

I think you've drawn the wrong conclusion. Just because a life has a step early in the process of forming that includes an egg and a sperm does not mean that it is a living thing at that point. You are affirming the consequent here, which is a logical fallacy.

[TimTheTinker]

I was pointing out the inconsistency of the opening statement with modern orthodoxy, not presenting a logical argument either way.