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I often see posts and articles referring to Amenalistic Type A (example)
what does the type "A" refer to?
what are the other types?

thanks in advance

Hi
Did you mean Anerythristic

Anerythristic type 'A' corn snakes lack the red pigment of the common variety, leaving a mostly black, gray, and white snake

Anerythristic type 'B' snakes are lacking the yellow color pigment usually found in corn snakes

Paul..
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Pinky's taste nice,only if there fresh..

But isnt the actual word Anerythristic mean No Erythric (or red pigment) ?
if so then how can no red pigment type b refer to no yellow?

so how do u call a snake whos only black and white, no yellow? Anerythristic Type AB?

Stinkypinky's description is incorrect.

Anerythristic type A is a black and grey or brown and tan appearance. They DO often have yellow on the neck, but it's not a requirement.

Type B (Charcoal) tends to be more dark grey and medium grey. While it's not common for them to have yellow pigment on their necks, they sometimes do, and lack or presence of yellow should not be used to determine which type of Anerythrism a snake is carrying. It can, however, be used as a probable clue.

Note that both of the above are general appearances. Anery A and Charcoal are both controlled by different recessive genes. If you cross an Anery A with a Charcoal, you'll get all normals (assuming one isn't het for the other gene).

-Kat
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This Space For Rent

how can crossing two Anerys (Type A and B are still Anerys) resault in the "Normal" appearence?

>>how can crossing two Anerys (Type A and B are still Anerys) resault in the "Normal" appearence?

Because they're not the SAME anerys. The name 'Anery A' and 'Anery B' are just labels we stick on the morphs to somewhat describe how the morphs look to us. Just because we decide to call something 'Anery A' doesn't mean that it is then forced to behave 100% as an anerythristic gene. It's just what we've observed.

Anery A is not on the same locus as Anery B (Charcoal) and thus you don't get anything special in the F1s when crossing Anery A and Anery B.

The same is true of the hypomelanistic genes. Hypo A, Hypo B (Sunkissed), Hypo C (Lava), and Hypo D (Ultra) are all on different locii from eachother and will produce normals when crossed with one another. Word has it that there's a Hypo E (Christmas) which is also on a separate locii.

Now, what genes -ARE- on the same locus are Amelanism and Ultra hypo. If you cross an Amelanistic snake with an Ultra Hypo snake, you will get an intermediate looking offspring called an 'Ultramel'. This F1 offspring is carrying one copy of the Amel gene and one copy of the Ultra hypo gene.

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A quick genetics rundown on Charcoal and Anery A.
Capital letters represent the normal, or wild-type appearance for a particular gene locus. Small letters represent the recessive gene.

Anery A = aaCC
Charcoal = AAcc

If you know your punnett squares, you know you'll get 100% offspring with the genotype of AaCc. Since the normal gene at both locii are dominant, the F1s are all normals het charcoal, anery A.

The F2s are where it gets interesting.
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Now, if one of the snakes is het for the other gene (and it's not at all uncommon for charcoals to be het anery A), things will look more like:

Anery A = aaCC
Charcoal het Anery A = Aacc

F1s = AaCc, aaCc... or, 50% normal het charcoal, anery A and 50% Anery A het charcoal.

--
It gets even more interesting with the knowledge that charcoal masks Anery A. That is, a cornsnake homozygous for BOTH charcoal and anery A looks no different from a cornsnake homozygous for just charcoal. In that case, the results look more like this:

Anery A = aaCC
Charcoal Anery A = aacc

F1s = aaCc... or 100% Anery As het charcoal.

-Kat
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This Space For Rent

Think of "normal" as the end result of an assembly line with two people working at each station. Let's say the line is producing computers. Two guys plug the cpu into the mother board, two other guys screw the power supply into the case, two others plug the power cord to the motherboard, etc. If the two guys plugging the cpu in are asleep on the job, the result is a dead computer. If the two guys plugging the power cord into the motherboard are asleep on the job the result is also a dead computer, but the cause is totally different. But if only one guy at the cpu station is asleep, the cpu gets put in. And if only one guy at the power cord station is asleep, the power cord gets plugged in. And the result is a normally working computer.

Anerythristic and charcoal produce similar results from two different defects in the biochemical assembly line. Crossing the two puts a normally-working gene and a nonworking gene at both places in the assembly line. And the result is a normal-looking snake.

Paul Hollander

lol
thanks for all the help
i understood it but theres a diffrence between knowing and doing
ill try all that in a year and a half :>

>>Stinkypinky's description is incorrect.
>>
>>Anerythristic type A is a black and grey or brown and tan appearance. They DO often have yellow on the neck, but it's not a requirement.
>>
>>Type B (Charcoal) tends to be more dark grey and medium grey. While it's not common for them to have yellow pigment on their necks, they sometimes do, and lack or presence of yellow should not be used to determine which type of Anerythrism a snake is carrying. It can, however, be used as a probable clue.
>>
>>Note that both of the above are general appearances. Anery A and Charcoal are both controlled by different recessive genes. If you cross an Anery A with a Charcoal, you'll get all normals (assuming one isn't het for the other gene).
>>
>>-Kat
>>-----
>>This Space For Rent

Hi
Sorry i should of mentioned that i was looking at the SOUTH MOUNTAIN REPTILES web site inbetween reading the posts, and copied and paiste the anery info from there expecting it to be ok, sorry i should have read it first.

I shouldnt have been so lazy should i.

SOUTH MOUNTAIN REPTILES should take the credit.

Paul..
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Pinky's taste nice,only if there fresh..

Throwing Don's name around doesn't make your answer any less wrong than it was. If that's what Don has on his site, shame on him for being misleading.

-Kat
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This Space For Rent