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Anerythristic
Anerythrism is caused by a single recessive gene that
removes the reds and oranges, leaving the blacks, browns
and greys in the general body color of cornsnakes.  The
yellow along the side of the head, neck and part of the body
may also remain.  Anerythristic A (also known as anery,
anery A, black albino and black corn) is the most
commonly found type of anerythrism.  There are at least
two other known types of anerythrism - anerythrism B (aka
- charcoal) and anerythrism C (aka - anery Z, plus other
name(s) yet to be determined).  The jury is still out as to
whether lavender is considered another type of anerythrism
or not.  Each of these types are caused by their own
individual recessive gene and it is yet to be determined
which look will over-ride what when more than one gene
type is homozygous.  Color variation in anery A cornsnakes
can be dramatic, ranging from stark black saddles on a
dark grey ground color to light, pink-hued browns which
are virtually indistinguishable in appearance from ghosts.