One gene defines the many patterns of snake skin

In many animals, skin coloration and its patterns play a crucial role in camouflage, communication, or thermoregulation. In the corn snake, some morphs display red, yellow, or pink blotches, and their dorsal spots can merge or turn into stripes. But which genetic and cellular mechanisms determine these colorful patterns? A team discovered that a single gene, CLCN2, is involved in these variations.

source https://www.sciencedaily.com/releases/2025/04/250424121511.htm