As I understand it the whole basis of abortion rights is that embryos while being human beings at an early stage of their development do not have rights seperate from that of their mother, because they are incapable of surviving on their own, and that therefore killing them is not to be classed as murder, and can be justified under certain circumstances.

But to suggest that a human embryo is not human is scientific nonsense.

And to suggest that any human at any stage of their development can be classed as "property" is not something which can ever be accepted.