There are now 3 recognised types of Anerythristic corns.
Type "A" is the most commonly available. Type "B", also known as Charcoal, was
first discovered in snakes from Pine Island. It was shown to be a separate gene
involved to that in type "A" by breeding the type "B" and type "A" Anerythristic
snakes together. The result was some normal coloured corns and some
Anerythristic corns. The fact that "normals" were produced shows that there are
at least 2 genes involved that can "turn off" the red. As some of the hatchlings
were Anerythristic it shows that the type "B" also carry the type "A"
gene.
Type "C" Anerythristic produces Caramel corns. Through selective
breeding by Rich Zuchowski of "Serpenco"it has been shown to be a
completely different gene to that involved in either the type "A" or type "B"
Anerythristic corns.
@ Stephen Sharp 2006