Reptile & Amphibian Forums

I love this discussion-I'm totally confused also. Breeding Ultrabreit x Ultrabreit produces all UB but some of them don't look like the parents. A portion are 100% striped-here is one of those-next a photo of the mom which has sections that have striping, but not like these babies. I haven't bred two of these stiped ones to each other yet.The cool part is the more you breed them it seems the more different babies you get. I think all of the individual variation in these three species is what makes them amazing to work with!

Here is another one-I call these super stripe Ultrabreits-but not in the sense of the classic "super" term-just great stripe!

"super" striped baby Ultrabreit-Ul x Ul breeding-

Hi Tracy,

Unfortunately the photos are not showing up for me. I saw the post yesterday, and thought maybe it was a glitch with your photo host, we go through that here sometimes. Anyhow...I have a couple of questions, fueled by the simple fact that I REALLY enjoy trying to figure out genetic riddles!

As far as the Ultra Breits are concerened:

1.) From your breedings ultra X normal has always resulted in what variables in offspring phenotypically?

2.) ultra x ultra has always resulted in what variables in offspring phenotypically?

3.) ultra x (normal looking sib, or "marker" sib) has resulted in what offspring phenotypically?

The reason I ask is that I would imagine that one of two things is happening:

1.) Similar to the original Platty Daddy, the Anthrax, The Purple Albino Retic, and a few others there are 2 seperate mutations is at play. In other words you could theoretically be playing with a dominant (or incomplete dominant) pattern mutation which was originally expressed in the patriarch (or matriarch)? Creating offspring which show all of the visual characteristics in their homozygous genotype as being an ultra and breed true. While you may have animals which are a heterozygous genotype for the incomplete dominant part of the trait while homozygous for the secondary recessive trait and only create offspring of the incomplete dominant version of the trait phenotypically.

2.) This a simple multi allelic system and a few people have been fortunate enough to outcross animals of this mutation with other animals with a mutated allele on the same gene locus creating a homozygous variation of the same trait without breeding to another phenotypically ultra breit animal.

3.) natural variation of the base of this species is so vast that when bred to any particular female her natural genetic material can create a plethora of variations of the phenotype of this trait creating animals which look extreme, or create animals which look more traditionally normal.

I honestly am not super hip to the history of this mutation so that has created a learning curve on what the prior breedings have fruited. With that said I would hope with what breedings have been done this should not be too difficult to sort through and decipher a conclusion which explains what has happened.

Take care,
Jordan
Prehistoric Pets

Tracey

My wife and I are both molecular biologists by training. She still runs a research lab. We have discussed these issues on multiple occasions and come up with zilch for concrete answers and 23 hair-brained questions. I know for sure that human genetics aren't a good standard for comparing color and pattern in reptiles. Simple Mendelian genetics just go right out the window, SOMETIMES. Other times they follow the rules lock-step. It makes me wonder if reptiles, being somewhat more primitive have less control over transposable elements and more frequent crossover events. I definitely need to read more and really need for Audrey to sink her teeth into it, but we always seem to lack the time. It fascinates me.

Have you ever done any research on a clutch whereas you incubated part of the clutch at one temp and part at another? I saw the results of that a couple of years ago and all I can say is that the results were profound.

Steve
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Steve Frist

www.serpentinelogic.com