Dominant ball python gene
Stranger Ball Python: Genetics and Pairing Odds
Stranger is a dominant gene: one copy shows fully, so half the babies from a Stranger bred to a normal are Stranger. Two copies look the same as one, but a homozygous animal passes the gene to every baby.
In Lock and Lay, Stranger 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 Stranger pairings produce
| Pairing | Babies, per egg |
|---|---|
| Stranger × Normal | 50% Normal50% Stranger |
| Stranger × Stranger | 75% Stranger25% Normal |
Try Stranger pairings yourself
Put any two animals into the ball python morph calculator for the full odds, hets and supers included. Or breed Stranger 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.