What red herring? People (if I recall, you brought it up) are saying beings that are "human" demands moral worth.
I am asking, by what merit we put moral worth into things, so as to discern whether a conceptus possess these traits. People appear to be saying the fact that a conceptus is "human" gives it . The only way this matters is if by "human" you mean "person", or if by "human" you mean an organism with human DNA. If it is the former, then we have to discuss what a person is. Which inevitably leads to the latter- human DNA is not sufficient or necessary condition for personhood in that is not required nor not enough to warrant personhood or moral responsibility, as my thought experiments are meant to show.
Just because the conceptus possesses human DNA does not mean it automatically garners moral worth. That is all I am saying. I am asking what does give it moral worth. What trait gives the conceptus moral worth?