Jungle Motley Red-Tailed Boa Constrictor

One animal carrying both genes. Each one is inherited separately, so this combination is made by bringing them together rather than being a gene of its own.

The two genes

Jungle: co-dominant; Pattern broken and thrown out of line, often asymmetrically, with wide saddles.
Motley: recessive; Saddles joined and drawn out along the back, with clean flanks.

How one is made

Both genes have to come together in the same animal. The pairing that does it most directly is Jungle × Motley, which works out every outcome and its odds.

Every Red-Tailed Boa Constrictor combination