That’s your belief. Nothing scientific to back that up, as much as there’s nothing scientific, or as evidence, to back your claim of the divinity of Jesus.
Isn’t it absurd to reconcile with that thought experiment? Because now I am going to twist it. Say the embryo was not merely human, but rather, a hybrid of a man and a pig. Will this individual be saved, too? Hybrids, for now, can survive upto the blastocyst stage, by the way. In the future, perhaps longer. But they are clearly hybrid, and clearly alive.
You have nothing scientific to back up your disbelief in a human spirit. Science, by the way, is based on a multitude of “facts” that one “believes” to be true until a new theory comes out.