Lock & Lay

Co-dominant ball python gene · super form: Power Ball

Spotnose Ball Python: Genetics and Pairing Odds

Spotnose is a co-dominant (incomplete dominant) gene. One copy gives the Spotnose look, and two copies make the Power Ball, a stronger version of it. Bred to a normal, a Spotnose gives about half Spotnose babies; a Power Ball gives Spotnose babies every time.

What Spotnose pairings produce

PairingBabies, per egg
Spotnose × Normal50% Spotnose50% Normal
Spotnose × Spotnose50% Spotnose25% Power Ball25% Normal
Power Ball × Normal100% Spotnose
Power Ball × Spotnose50% Power Ball50% Spotnose

Try Spotnose pairings yourself

Put any two animals into the ball python morph calculator for the full odds, hets and supers included. Or breed Spotnose ball pythons in Lock and Lay, a free ball python game where every clutch follows these same odds and the babies sell on a live market.

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Other co-dominant genes

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