What is the resulting Super form when two Yellow Bellies are bred?

Ivory

When two snakes genetically carrying the Yellow Belly (YB) gene are bred together, the resulting offspring expresses the Super form, which is named the Ivory. The Ivory phenotype is dramatically distinct from the standard single-gene Yellow Belly. Typically, the Ivory snake is characterized by being nearly completely devoid of pattern, often appearing as a creamy-white animal. A defining feature of this Super form is the presence of a prominent, distinct yellow stripe running along its dorsal line. The visual confirmation of this distinct, highly altered phenotype in the offspring provided clear evidence that the Yellow Belly gene functions co-dominantly, intensifying its visual effect when two copies are present.