Yellow Belly Ball python

Co-dominant (incomplete dominant) morph

Inheritance
Co-dominant (incomplete dominant)
Super form
Ivory
Allelic with
Asphalt, Gravel, Specter
Also called
YB

How Yellow Belly is inherited

Yellow Belly is co-dominant: one copy produces a visual Yellow Belly, and two copies produce the Ivory. Breeding a Yellow Belly to a normal gives about 50% Yellow Belly babies.

New to these terms? See the genetics glossary.

Yellow Belly is allelic with Asphalt, Gravel, Specter: they sit at the same spot on the chromosome, so an animal can carry at most two of them, and pairing them produces combination morphs.

Breeding outcomes

Odds per egg. Try your own pairing in the genetics calculator.

Yellow Belly × Normal

  • 50%Normal
  • 50%Yellow Belly

Yellow Belly × Yellow Belly

  • 50%Yellow Belly
  • 25%Ivory
  • 25%Normal

Ivory × Normal

  • 100%Yellow Belly

Yellow Belly × Asphalt

  • 25%Asphalt
  • 25%Asphalt Yellow Belly
  • 25%Normal
  • 25%Yellow Belly

Yellow Belly × Gravel

  • 25%Gravel
  • 25%Gravel Yellow Belly
  • 25%Normal
  • 25%Yellow Belly

Yellow Belly × Specter

  • 25%Normal
  • 25%Specter
  • 25%Specter Yellow Belly
  • 25%Yellow Belly
Open the ball python genetics calculator

Other ball python morphs