> it is the person who made the embryo in the petri dish's duty to take care of it, i.e. the parents.
And, apparently, they do. They take care of it by incinerating it, *long* before it develops a nervous system.
Here's the thing: an embryo in a test tube or a perti dish is *not* viable. What makes that cell viable is human choice and medical technology. Such an embryo CANNOT survive, unless it is implanted in a womb. A decision to not save an unviable embryo... doesn't sound like murder to me. Taking a functional embryo *out* of a womb and killing it... that's clearly different.
An embryo is a life, viable or not. A decision to render it unviable by not implanting it is murder.
Perhaps to an alchemist. Like you.
In another respect a two month old baby is not *viable*. He'll starve unless food it put directly into his mouth, he can't clothe itself to protect himself from the elements, can't defend himself from attack, and can't move from one place to another without being picked up and carried. How *viable* is that? Where does one draw the line?