Dominant ball python gene
Spider Ball Python: Genetics and Pairing Odds
Spider is a dominant gene: one copy shows fully, so half the babies from a Spider bred to a normal are Spider. Two copies look the same as one, but a homozygous animal passes the gene to every baby.
What Spider pairings produce
| Pairing | Babies, per egg |
|---|---|
| Spider × Normal | 50% Spider50% Normal |
| Spider × Spider | 50% Spider25% Non-viable egg (homozygous Spider)25% Normal |
Designer morphs with Spider
- Bumble Bee Spider + Pastel
- Mojave Bee Spider + Mojave
- Lesser Bee Spider + Lesser
- Fire Bee Spider + Fire
- Stinger Bee Spider + Enchi
- Spinner Spider + Pinstripe
Try Spider pairings yourself
Put any two animals into the ball python morph calculator for the full odds, hets and supers included. Or breed Spider 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.