Lock & Lay

Co-dominant ball python gene · super form: Super Nanny

Nanny Ball Python: Genetics and Pairing Odds

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

What Nanny pairings produce

PairingBabies, per egg
Nanny × Normal50% Normal50% Nanny
Nanny × Nanny50% Nanny25% Normal25% Super Nanny
Super Nanny × Normal100% Nanny
Super Nanny × Nanny50% Nanny50% Super Nanny

Try Nanny pairings yourself

Put any two animals into the ball python morph calculator for the full odds, hets and supers included. Or breed Nanny 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 co-dominant genes

GHIRARHet Red AxanthicBananaSpecialAcidChampagneSpecterChinoBambooWookieGravel