User blog comment:Oknight/Superboy and Superman/@comment-1747822-20110314055727/@comment-3465526-20110315011614

No, his mother is Lara. Remember a twin is what happens when some cells in a developing embryo get confused and decide to make a whole person instead of some leg tissue or whatever -- a clone is exactly that  (assuming mitochondria and other non-nuclear DNA are duplicated also -- and lets face it, if you want a super clone, you'd better not skip parts) -- the only difference is the timing of the gestation, but if you use frozen embryos, its entirely possible for twin brothers to be born decades apart and to have different birth mothers (although presumably Cadmus uses "birthing genomorphs"  or something  eeeeuuhh) Just because Superman was rather beyond the embryo stage of development when they split (or had Sboy's DNA extracted or whatever) doesn't alter the fundamental relationship.