Dr. Carson Beckett: My theory is that the Ancients unwittingly allowed humans to evolve on a planet with, uh, insect species on it. At some point the insects fed on humans and somehow incorporated our DNA into theirs. The Wraith are an evolution of that combination.
Lt. Aiden Ford: So what you're saying is the Ancients actually created the Wraith?
Dr. Carson Beckett: By accident.
Dr. Rodney McKay: Or negligence.
Major John Sheppard: You're saying Teyla's part-Wraith?
Dr. Carson Beckett: A very small part.
Dr. Elizabeth Weir: Which makes her about as different from us as you, because of the Ancient gene you possess.
Dr. Rodney McKay: Well, and some other things!
Dr. Elizabeth Weir: You were right.
Dr. Carson Beckett: Lovely! About what?
Dr. Elizabeth Weir: Your theory of the Wraith evolving after the Ancients arrived in Pegasus galaxy...
Dr. Rodney McKay: Oh, you're kidding me!
Dr. Radek Zelenka: Pay up.
Dr. Carson Beckett: How d'you know?
Dr. Elizabeth Weir: The Wraith language... It's a derivative of Ancient.
Dr. Carson Beckett: It was very easy to miss. In fact, I couldn't even make the kind of comparison necessary to isolate the specific strand. We needed Wraith cells, which we eventually got, but then we need a full mapping of the genetic code contained within those cells, which wasn't even fifty percent complete...
Teyla Emmagan: Please! Tell me.
Dr. Carson Beckett: You have some Wraith DNA in your genetic make-up.