This is the first I am hearing about sex-linked traits in ball pythons! I had no idea that coral glows are sex-linked, but it certainly is one reason why they haven't popped up nearly as fast in numbers as I thought they should be doing by now. Being Z-linked makes visual males essentially as rare as if it were a recessive trait, and males are a key component of producing volumes of a particular trait.
Is the coral glow the only sex-linked trait we know of so far? Does this also imply that "bananas" are also sex-linked?