Axanthic Antarctic

Axanthic is a recessive mutation that removes yellow (xanthin) pigment while leaving melanin intact. The result is a gray, black, and white snake that keeps its normal pattern and dark eyes but loses all warm coloration.

Antarctic is a newer incomplete-dominant trait — one copy is visually expressed, two copies produce a super form (Superantarctic). Crucially, Antarctic is ALLELIC to Arctic: they occupy the same gene location, so they do not stack like unrelated traits. A snake cannot independently carry both Superarctic and Superantarctic. One Arctic allele plus one Antarctic allele produces the 'Antarctic Arctic' compound — a distinct combined expression, not a simple stack. Plan Arctic/Antarctic pairings carefully.