http://www.angelfire.com/extreme/yj/subq.html
For his bio. He is a clone of supes
Superman and Lois couldn't have a child. She so much as get a bit of a sun tan and BAM! Baby kicks his way outta there. Then there's always the question of whether or not his sperm would blow her head off. Then only way they could do it is if he wore a Kryptonite condom, which would kill him.
For the record, Superboy was created AFTER Supes' death. His DNA consisted of part of the man of steels, however they could not figure out his entire DNA code so they improvised and used other DNA in place. Superboy ( otherwise known as experiment thirteen "started suddenly fighting off the input like a man possessed....Then those newsboys broke him loose!" Page 11 of the graphic novel THE RETURN OF SUPERMAN.
Superboy
Superboy was created when Supes was killed by Doomsday, when the Cadmus Project tooks Supes genes and cloned them after they thought Supes was never coming back. Superboy helped Supes and Man of Steel (One of the four imposter's after Supes death) to help stop the plans of the Cyborg-Supes and Mogul (Cyborg-Supes was another imposter, who made everyone believe in him, and then leveled Coast City to make another Machine City, Superboy stopped C-S making a second Machine City by changing the course of a rocket sent to Metropolis) Superboy never got fully developed bacause the News Boys broke him out of his pod before he matured enough to have his full powers.