Red Factor/Red Coat Questions

[Mark_L]

This may have been asked in the past or perhaps the answer is in a previous thread, but I have not been able to find it using the search tool. Please forgive me if I am repeating something.

Could someone please expound on both the red factor and red coat genetics. From what I have been able to find, red factor is what is responsible for the "cayenne" in cayenne fires. It deepens and saturates the red that already exist in that morph. Red coat is what is responsible for the overall deep "redness" in the so-called old school blood reds. It provides a red wash of color across the entire snake and pretty much reddens everything. Do I have this right?

My questions relate to inheritability and compatibility of both of these. Are these single genes being expressed or is it more of a polygenetic inheritance that is brought out through line breeding? I saw a recent post of some ref factor babies for sale that suggested that red factor is a dominant vice recessive trait, but the single red factor parent was also a tesserra so perhaps that had something to do with it. Are these codominant genes sharing an allele or something else?

Also, does anyone have experience of what either red factor or red coat will do with none classic/fire/bloodred morphs? It seems like it might color up some of the lighter morphs. What would a red factor or red coat lavender gened morph (orchid, hypo, ultramel or just straight lav) look like?

Thanks for any thoughts.

 

[MysticExotics]

It's not tied to the Tessera gene, otherwise it would only be Tessera's with the RF.
Bob (Crotalis40741) has done more work with both genes than I have. He discovered that RF is dominant and only needs one parent to pass along the gene, and with RC, both parents need to carry the gene to pass it along.
I will try to find here he posted that finding.

 

[MysticExotics]

Here is the thread

Edit to add: there is still much to be learned about these genes.

 

[Shiari]

And sometimes red things pop out unexpectedly.

I paired a bloodred het hypo, charcoal anery to a coral snow het hypo. All the babies were really good looking, but one little girl stood out from the rest.

Shortly after first shed:

After most recent shed:

Showing off the orange saturated belly she's had since she hatched-

Quite colorful for her age-

 

[MysticExotics]

Megan, are you holding onto that one to test breed her, to see what that might be?

 

[Shiari]

Ruby is staying for a while yes. Whether she'll stay up to breeding size, I don't know... but probably.

 

[SarahP]

I have a few like that, with red bellies. I wondered if that was RF or RC or some marker for diffused/bloodred or ... what.

 

[MysticExotics]

I've seen het Bloodred animals with the red wash like that on the belly.

 

[Shiari]

I had 20 eggs from Pearl, and of those 20 het diffused animals, only Ruby here had the red wash.

 

[MysticExotics]

I'm not saying all do, but I have seen het BR babies with that red wash.

 

[Shiari]

It's also seen on a fair few okeetees.... and a lot of red factor/wash/whathaveyou animals.