I said, (if you kept reading the post) the scientific facts that answered the myths listed, were too detailed to add to the post. I'm not opening the link and doing the reading and explaining for you. You can do that for yourself. It absolutely answers the question you posed:
Okay, let's see what your source says (BTW, it's horrendously formatted, you might find
THIS version is much easier to read.)
Your source says, "To begin with, scientifically something very radical occurs between the processes of gametogenesis and fertilization�the change from a simple
part of one human being (i.e., a sperm) and a simple
part of another human being (i.e., an oocyte�usually referred to as an "ovum" or "egg"), which simply possess "human life", to a new, genetically unique, newly existing, individual, whole living human
being (a single-cell embryonic human zygote). That is, upon fertilization, parts of human beings have actually been transformed into something very different from what they were before; they have been changed into a single, whole human being. During the process of fertilization, the sperm and the oocyte cease to exist as such, and a new human being is produced."
This seems very clear to me. A unique DNA sequence means a unique person. As such, a chimera - with TWO unique DNA sequences - is two people.
So I ask you my question again. Your own source indicates that
THESE people are in fact each two people, since they each have two sets of cells, one with one set of DNA (let's call it DNA set A) and another set of cells with a different set of DNA (we'll call that DNA set B).
Now, if I could somehow go in and change every example of DNA set B to match DNA set A, the person would still be alive, they would have an uninterrupted experience,. But have I committed a murder? If you believe that a unique set of DNA is sufficient to grant personhood (and your own source supports that position), then yes, I must have committed a murder.
So, who is the dead person?