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Terrazzo or vanishing stripe?

chapfam

chapfam

New member
We have a snake that looks like it could be either terrazzo or vanishing stripe. How would you do breeding trials to determine which gene a snake is carrying? We have the 2010 Cornsnake Morph Guide, and understand the basics of breeding trials, but the grandchildren could still look like both. What do you recommend? Thanks!
 
Is that him, Striper, on your website? If you bred him to a motley female, and got motleys, then he is a stripe, not a Terrazzo. Terrazzo is a pattern gene not related to stripe.
 
I'd breed it to a motley or striped. If your animal is a terrazzo, there shouldn't hatch any pattern mutations. terrazzo is not allelic to striped or motley, so all hatchlings would be just normals. If you have a striped you'll get stripeds or motley stripeds.
 
What if a snake has striped and terrazzo genes - isn't that possible? Since they are on different alleles, couldn't the snake have both genes?
 
My patternless anery had a nice stripe when she was a hatchling. She also had a long pin stripe directly over her back bone. After her first shed with me that pin stripe and half her patter was gone. Over the year she has lost her stripes up to her neck, but gained her yellow instead. It looked like the pigments were on a race as her gray stripes dissolved and her yellows advanced. If your snake didn't have this shedding adventure then he's most likely Terrazzo.
 
Since you already bred Striper to a motley and got motley offspring, he is a stripe. Terrazzo stripes are still pretty uncommon right now, as only a few breeders are working on those projects. If you want to know for sure, just breed Striper back to one of his daughters in a couple years.

Edit: apparently I did not read the replies as I just noticed that Nanci already answered this :p
 
Angela, do you know there actually _is_ a Terrazzo stripe? I haven't heard of one in existence.
 
Nanci said:
Angela, do you know there actually _is_ a Terrazzo stripe? I haven't heard of one in existence.
Click to expand...

It wouldn't surprise me to find out that there are some of these out there, and even more being hets as there had to have been some test breedings of terrazzo X stripe to determine that terrazzo is in fact a separate gene. Now as to which phenotype would be dominant in a snake that is homozygous for both is the question of the day!
 
Yeah, I forgot that test breedings must have been done to determine if it was allelic to motley. The most recent CMG I have at work is 2008, which says Terrazzo originated in Upper Keys corns, and Jeff Galewood bred F1 normal hets to recover F2 Terrazzo offspring. Breeding trials against motley were planned in 2008...

Looks like you're just going to have to buy yourself a Terrazzo female!!
 
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