Posted by:
sean1976
at Thu Jul 24 13:52:01 2008 [ Email Message ] [ Show All Posts by sean1976 ]
To a large degree I agree with what is said above but wanted to add or qualify a few points.
Sunglow is often amel's which have been line bred for reduced/no white. However I have also heard of some "sunglow" lines which are amel with hypo(both simple recessive) instead of being line bred. Also there is a hypo gene labeled"lava" which has a stronger affect on the melanin and can look like a sunglow as well. Lava is a simple recessive but if you bred a lava to a traditional sunglow you would get normals het for both lava and amel.
Secondly as far as I know there are no Co-Dom genes in cornsnakes. The way I am familliar with Co-Dom genes is that they are dominant over the natural phenotype in the hetrozygous form but that the homozygous form has a phenotype different from the hetrozygous form.
In corn snakes the ultra gene and the amel gene are both simple recessive genes. What makes them behave abnormally is that the ultra and amel genes are co-allelic so if the animal is both hetrozygous ultra and hetrozygous amel then you get the "ultra-mel" phenotype which is a partial expression of each of the genes.
Hope this helps a little.
Sean.
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1.1 BRB
1.1 Triple Het TPRS's
0.1 Silver TPRS
1.1 Amel Bloodred Corns
0.1 Abbott Okeetee Corn
0.1 Blizzard Bloodred Corn
1.1 Thayeri Kingsnakes
0.1 Reeve's Turtle
0.2 Amstaff's
1.0 Pudytat
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RE: genetic confusion (kinda long) - sean1976, Thu Jul 24 13:52:01 2008