Reptile & Amphibian Forums

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As far as looks go, leucistic is basically a solid white snake, sometimes pinkish-white, especially when young.
The albino will often wind up with shades of pink, cream, yellow, orange, etc, depending upon the type of snake, and retain the basic pattern of the normal-looking snake in these typically amelanistic shades and colors.
A leucistic texas rat will look very much like a leucistic black rat or other leucistic ratsnakes, while the "albino" (amelanistic) ratsnakes will exhibit a wide range of colors.

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I'm still trying to work out why, but leucies generally have blue eyes and albinos usually have pink eyes. But if you have an animal that is double homozygous for albino and leucy, it will be a solid white animal with pink eyes. You can get Texas rats like this.
The way I understand it, albino is shorthand for 'amelanistic' and only wipes out the melanin or brown/black pigment. The yellow, orange and red pigment (and any blue, which is a different story) is still showing. Anery, on the other hand, wipes out red and yellow but leaves the black. Leucy wipes out ALL the color from the get go, leaving a pure, solid white.
Something that's helpful to remember is that mammals only have the brown/black pigment, so an albino mammal is white, but reptiles have more that one pigment. That's why the terms can be a bit confusing if you're used to albino mammals.
These are basically the snake terms, they don't work for, say, leopard geckos. I still can't figure what how what they call leucy in leopards works.
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Eryx - All the fun of a boa in a convenient pocket size!

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Check Out My Albums

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Anery, on the other hand, wipes out red and yellow but leaves the black. Leucy wipes out ALL the color from the get go, leaving a pure, solid white."

Actually anery technically should only wipe out the red but in a lot of species it for some reason takes the yellow too. The same thing with axanthic which should only take yellow but takes red also in most species. This leads to the terms being used interchangably in some instances, which is a contradiction. Realistically, neither is correct. Leucistic does not wipe out all color because they end up with dark eyes and on some there is a trace of pattern leftover. I'm not saying I know how these traits work. I'm saying that, as of yet, nobody does. We just use these words to describe a certain "physical deformity". lol There are a few rules we can apply to how the traits will be passed to offspring, but as far as what is causing them, it's fuzzy.
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Martin Whalin
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Quotes from guys named Carl:

"Science stops at the frontier of logic. Nature does not, she thrives on ground as yet untrodden by theory."
-Carl Jung

"It is foolish to let singleness of purpose deprive one of the joy and delectation of the many wonderful sights and sounds incidental to the quest."
-Carl Kauffeld

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Check Out My Albums

1.0 Ball Python
"Aragorn"

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"Gimli"

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"Indigo"

0.1 Australian Cattle Dog/Pointer
"Kira"

That was sort of the wrong way to put anery. I'm just so used to KSB's, where there is no difference between the terms (there's only one KSB anery muation and people call it both things). The technical explanation that I heard was that red and yellow are two pigments made in the same type of cell. So some mutations could wipe out red or yellow, while other mutations could wipe out both. I'm not sure if there are snakes that actually have a morph with no red but yellow or vice versa, but if not I think it would be possible.
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Eryx - All the fun of a boa in a convenient pocket size!

physical deformity??? I believe the words you are looking for, or at least the words that are appropriate, are 'phenotypic variation' and as for how fuzzy the inheritance of certain traits, it wouldn't take much to figure out their inheritance patterns, just some good records and calculated breeding which I think people do but it's more common in corns where the colors are really well established and a lot of people are playing with them.
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Sue Barnett
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>>physical deformity??? ""

Ha ha. Sorry that was an outside joke.

Anyway, I'm not saying the genetics are fuzzy, in most cases it's a simple recessive trait. I'm saying the causes are fuzzy. An even better example than a KSB would be the brooksi axanthics. Brooksi babies have distinct red and yellow coloration. The anery/axanthic is black and white. We know how it's inherited but no has explained (to me) any explanation besides speculation. ... That's kind of like taxation without representation. or elation without causation...or miscombobulation without occulation...never mind.
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Martin Whalin
My Email

Quotes from guys named Carl:

"Science stops at the frontier of logic. Nature does not, she thrives on ground as yet untrodden by theory."
-Carl Jung

"It is foolish to let singleness of purpose deprive one of the joy and delectation of the many wonderful sights and sounds incidental to the quest."
-Carl Kauffeld