What is the Codex on Krypton?
Codex: An ancient Kryptonian artifact that decodes the genetic makeup of the artificially incubated babies on the planet. It translates a child’s genetic attributes before his or her birth. Zod was born to be a soldier, as dictated by the Codex.
Why was Superman Given the Codex?
The Codex was used to analyze certain pieces of genetic code and use it so that newborn babies would have a predetermined societal role. General Zod wanted to get hold of this codex to eradicate Krypton of the “inferior” and “weak” bloodlines by simply deleting them from the database.
What did Jor El do with the Codex?
Both to preserve the Kryptonian race and provide his son with the distinction of choosing his own destiny, Jor-El steals the Kryptonian genetic codex to send it to other worlds, resulting in his son, the first natural birth on Krypton in ages, who is then sent to Earth.