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The Cultivars (morphs)/Genetics Issues Discussions about genetics issues and/or the various cultivars for cornsnakes commercially available.

Red factor co-dominate?
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Old 01-30-2021, 05:47 PM   #1
waldo
Red factor co-dominate?

I got a baby mandarin (amel kastanie) last fall that was listed het anery, het red factor but now I see red factor is co dominant.
Does this mean he should show increased red if he has the gene? I haven't been able to find a red factor mandarin to compare him with.
His mother was red factor, dad was not

For that matter, what does a super red look like?
 
Old 01-31-2021, 12:10 AM   #2
Shiari
Quote:
Originally Posted by waldo View Post
I got a baby mandarin (amel kastanie) last fall that was listed het anery, het red factor but now I see red factor is co dominant.
Does this mean he should show increased red if he has the gene? I haven't been able to find a red factor mandarin to compare him with.
His mother was red factor, dad was not

For that matter, what does a super red look like?
Red factor is incomplete dominant, and it is indeed the case where even a single gene is/should be a visual.
 
Old 01-31-2021, 04:09 PM   #3
bushsnake
I've seen some people use het red factor and that's fine
I'd ask if it was a single gene or a double gene red factor.
When you bred a single gene red factor to a non red factor then I believe only half the babies will be single gene red factor(or het)
If you breed a double gene red factor then all offspring are het red factor or also called coral
 
Old 01-31-2021, 09:34 PM   #4
waldo
Thank you both. I just wish I knew why the breeder didn't label him as a coral mandarin instead of het red factor.

He is a very well know breeder who has worked extensively with red factor. Maybe he just didn't want to bother explaining a co dom gene.

After looking at many pics of mandarins, I do believe mine has the RF gene. He is much more colorful then other mandarins.
 
Old 01-31-2021, 09:54 PM   #5
waldo
Here is his photo thread if anyone cares to take a look.

http://www.cornsnakes.com/forums/sho...77#post1742277
 
Old 01-31-2021, 10:47 PM   #6
hypnoctopus
So, in that thread you have him listed as het red coat, which is different from red factor.
 
Old 02-01-2021, 12:47 AM   #7
Shiari
Red factor - incomplete dominant - meaning that a single gene snake is in between the appearance a homozygous red factor and a normal. It goes normal, red factor (more red than normal), homozygous red factor (much much more red than single gene red factor)
Redcoat- recessive

Codom would be the snake having patches of increased red AND patches of normal color as both the normal gene and the red factor gene would be co (equally) dominant. Red factor is not a codominant trait. Corns at this time do not have any codom traits.

If Don said your snake is het for redcoat, it is carrying a recessive trait and will not show it visually.
 
Old 02-01-2021, 06:51 AM   #8
waldo
Quote:
Originally Posted by hypnoctopus View Post
So, in that thread you have him listed as het red coat, which is different from red factor.
Yes, that was a mistake on my part. I had gotten the terms mixed up. I did clarify with the breeder
 

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