Stripes being polygenic?

[Ian S.]

This debate has been tossed around for some time. I was curious to see how many people have seen the same results as I have or if there is any new insight on the topic from other breeders. My curiousity was stemmed from this thread.
http://www.geckoforums.net/showthread.php?t=26761

 

[Halley]

Well I breed a boldstrip to an animal that didn’t have any boldstrip lines that I know of in her. What I got was some offspring with near perfect boldstrip, one with ½ of a boldstrip, and a few that where banded. So strips do what they want, they act recessive, dominate, and co-dominate, from what I’ve seen, but they are technically line breed.

Lets just say, strips are like a box of chocolates, you never know what you are going to get.

 

[shadowx362]

Yeah I am going with dominant linebred I bred a male bold stripe to a flat out normal and I got some pretty nice geckos, then I bred it to a red stripe and got the same results of great geckos with bold pattern. I had about a 50/50% Bold/Jungle to "normal" which is like if it was dominant. Maybe line bred are dominant, but express the quality of the line bred colors. Oh and technically they are dominant because a "normal" "mack" and an "enigma" are all dominant and if you line breed a normal it is still going to be dominant right?

 

[Mel&Keith]

We have a Bold Stripe het Bell that we bred to a Normal Bell last year and we only got banded babies. We bred her to a Bold Stripe Bell this year and got all Bold Stripes.

We also have the Bell Enigma that we bred to a Mack Snow Bell that produced 2 perfectly striped MSB Enigmas. Neither parent was striped so it didn't act line bred in that instance. Both of the parents had lineage from Kelli's stripe lines so it looks recessive to me. Just my opinion!

 

[Baoh]

Perhaps it depends on the line it is derived from.

 

[acpart]

Here are my stripe data points to figure into the equation. The most interesting breeder is my banded male Tremper albino, whose genetic history I don't know:

male tremper x stripe= 50% banded, 50% stripe

stripe x PRS = 100% stripe ranging from bold stripe to PRS

stripe (daugheter of male tremper above) x PRS = all stripe except 1 jungle

male tremper x SHTCT (he is also her father) = all stripe except 2 jungle this season

The male tremper is in his 4th season of breeding with me and has only produced stripes and jungles when bred to a stripe or to his offspring. He bred to another of his offspring this season and produced only banded geckos.

Aliza

 

[godzillizard]

So strips do what they want, they act recessive, dominate, and co-dominate, from what I’ve seen, but they are technically line breed.

There are a TON of banded geckos out there that came from jungle projects... a few days ago in another thread, Dan P explained it with eloquence--the only truly line bred trait is color. Jungle, is a polygenic recessive, and so you have to selectively breed the best to the best to get the trait to stabilize, let alone amplify to the point of "stripe". It's a complex recessive, that you can ALSO line breed, but in reality, you can line (and selectively) breed any trait/mutation--even simple recessives--for example, just look at what Marcia's done with Murphy patternless :main_thumbsup: To be clear, I'm talking about the jungle/stripe/reverse stripe/patternless stripe expressions/genetics, I don't have a clue how the HQ Redstripes came to be. Dan, a little help please?

Perhaps it depends on the line it is derived from.

Most definately, Baoh. Maybe the "patternless" redstripes that occur in pure HQ redstripe projects are an even more refined expression of the Redstripe traits, essentially non-albino "aptors"

 

[Golden Gate Geckos]

Well, the jury is still out on the genetics behind the stripes. I am more inclined to say that my line of Bold Stripes are not a true simple recessive... but more like an incomplete dominant, line-bred trait.

There is a H-U-G-E difference between the way the albino vs. non-albino stripes behave, so the theories about the bold stripes do not in any way, shape, or form compare to the genetics of the Tremper stripes... which are much more predictable. Just as an observation, I would say the Bell albino stripes act more like the non-albino lines.