Reptile & Amphibian Forums

I read a previous post about anerythism from kohrn, and tere is something i don't understand.

I always tought amel corn couldn't be het for something else than amel gene because it was a recessive trait. So you need two amel genes to make an amel corn....

How can an amel corn be het for anerythism?!?!

Very interesting!!
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Karine

1 female stripped amel
1 female anery
1 male hypoamelanstic

not that I am an expert on genetics but the actual location in the DNA for amelanism and aneristic (sorry if I spelled those words wrong) are not the same. Thus, you can have paired recessive genes for amelism and still carry a recessive gene for anery. This is how you get double recessive morphs.

So an amel can be homozygous for amel an carry on anoter locus the anery gene... !?

But what occur if he is homozygous for amel and also for anery?!?! can it be possible?!?

Thx
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Karine

1 female stripped amel
1 female anery
1 male hypoamelanstic

OK ...

All along the DNA strand there are paired genes. Each of these pairs is at a specific location, called the "locus." If an animal has two dominant genes at one locus, it can only throw dominant genes for that trait.

If an animal has one dominant and one recessive gene at that locus, it is said to be "heterozygous" for the recessive trait ("heterozygous" or "het" simply means that there are two different genes found at one locus).

If an animal has two like recessive genes at that one locus, the animal is said to homozygous for that recessive trait ("homozygous" refers to the animal having two of the same genes at that one specific locus).

The key to understanding how an animal can be het for BOTH anery and amel is that these two genes are found at different locations along the DNA strand. So, an animal can be het for both, homozygous for one and het for the other, or homozygous for both traits, and neither trait stops the other one from occuring, because they are not in the same locus of the DNA.

Can an animal be homozygous for BOTH amel and anery? Yep! They're called snow corns! )
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Darin Chappell
Hillbilly Herps
PO Box 254
Rogersville, MO 65742

Very very interesting!!

Thanks!!
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Karine

1 female stripped amel
1 female anery
1 male hypoamelanstic

Following the same pattern... can a hypo carry other color genes on different locus?! i always heard it was impossible...
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Karine

1 female stripped amel
1 female anery
1 male hypoamelanstic

Sure ... that's what a ghost is, as a matter of fact. Homozygous for BOTH hypomelanism and anerythrism A. There are lots of other combinations too:

Phantom = hypo and charcoal
Hypo Lavender
Hypo bloodred
Ghost bloodred
Hypo pewter
Coral snow = hypo and amel and anery

I suppose the list goes on and on ...

Hope that helps.
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Darin Chappell
Hillbilly Herps
PO Box 254
Rogersville, MO 65742

WOW!!! i'm very happy to know that!! i didn't expect so much possibilities with hypos!!

Im wondering why there is only few people here who own them!!

Thanks!
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Karine

1 female stripped amel
1 female anery
1 male hypoamelanstic

So all my babies are het for amel (since their Dad is amel), a few (theoretically 1/4th, last year it was 5 out of 23, and 0 out of 4) are homozygous for anery, and theoretically 66% of the normal looking ones are also het for anery. How do the different forms of anery work? (Same location on the gene, but with a order of dominance? Different locations but producing similar colors? Amoung the different forms of Anery, which is dominant? What do you get with Charcoal X Carmel? Anery A X Charcoal? etc.)
The babies from last year didn't have any yellow when they were sold. The only one I kept track of developed a very little yellow when she was about 9 months old, Will more develop as she ages (she's almost a year now). Is this Anery A or B? Would a photo help?
Thanks for the genetics lesson. I think this is beginning to make sense.
Corinne
dragonfly@w-link.net