Lock & Lay

Dominant ball python gene

Malum Ball Python: Genetics and Pairing Odds

Malum is a dominant gene: one copy shows fully, so half the babies from a Malum bred to a normal are Malum. Two copies look the same as one, but a homozygous animal passes the gene to every baby.

In Lock and Lay, Malum can't be bought at the start. It turns up only as a spontaneous mutation, from a lucky egg, and the first breeder to hatch one gets their name on the discovery board.

What Malum pairings produce

PairingBabies, per egg
Malum × Normal50% Normal50% Malum
Malum × Malum75% Malum25% Normal

Try Malum pairings yourself

Put any two animals into the ball python morph calculator for the full odds, hets and supers included. Or breed Malum 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.

Play Lock and Lay free

Other dominant genes

ConfusionLeopardTrickSpiderPinstripe