Well, you lost me right there. You are clearly not a gestational biological scientist. Since you are untrustworthy on this, then it is necessary to question your definition of a sexual act.
A human being is a human being from the moment of oonception, when the unique discreet DNA is formed. Makes no difference what the human looks like, it is still human, before, during, and after the birth. First breath does not limit humanity, any more than the last breath does.
I fear this is going to be a hugely long thread, with many people flattering you that you make sense. I despair of the forum, if you prevail.
Judith Anne wrote: “A human being is a human being from the moment of oonception, when the unique discreet DNA is formed.”
Well, there goes Jeremiah 1:5.
Neil