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Co-Dom/Dom Breed to a Simple Recessive

DZBReptiles Oct 26, 2006 02:30 PM

I was just sitting here working out a punnet square trying to figure out what the results
of breeding a Pastel 100% het Albino to a Pastel 100% het Albino or Spider 100% het Albino. I am not sure how you would draw it out. Can somone give me a clue as to what these crosses might produce and at what percentages.

Thanks, Jeff

Replies (6)

Paul Hollander Oct 26, 2006 06:47 PM

A pastel het albino x pastel het albino is a cross of two double hets. Both snakes have a pastel mutant gene paired with a normal gene and an albino mutant gene paired with a normal gene. If you make a Punnett square, both the sperm and the eggs would be (pastel locus first, albino locus second)
pastel, albino
pastel, normal
normal, albino
normal, normal

Draw a 4x4 grid with 16 cells total. Put the four sperm across the top and the four eggs along the left side (or vice versa if you prefer).

A pastel het albino x spider het albino is also a cross of two double hets. But there are three loci involved. The pastel het albino has a pastel mutant gene paired with a normal gene and an albino mutant gene paired with a normal gene. And a pair of normal genes at the spider locus. The spider het albino has a spider mutant gene paired with a normal gene and an albino mutant gene paired with a normal gene. And a pair of normal genes at the pastel locus. If you make a Punnett square, the pastel het albino produces the following sex cells (pastel locus first, spider locus second, albino locus last)
pastel, normal, albino
pastel, normal, normal
normal, normal, albino
normal, normal, normal

The spider het albino produces the following sex cells (pastel locus first, spider locus second, albino locus last)
normal, spider, albino
normal, spider, normal
normal, normal, albino
normal, normal, normal

Draw a 4x4 grid with 16 cells total. Put the four sperm across the top and the four eggs along the left side.

I'm not going to give you the results because it's good exercize to do it on your own. When you post the results, I will check them, though.

Happy Punnett squaring!

Does anybody know whether a pastel albino looks different from an albino?

Paul Hollander

DZBReptiles Oct 27, 2006 06:55 AM

Paul, Thanks for the info. I promptly got a headache while trying to figue out my punnet scribble, but here are the results I got.

1st. pastel Het X Pastel Het:

1- wild type non-het, 2- wild type 100% het, 1-wild type visual albino
2- pastel non-het, 4- pastel 100% het, 2- pastel visual albino
1- super pastel non-het, 2 super pastel 100% het, 1- super pastel visual albino

2and. pastel het X spider het

1- wild type non-het, 2- wild type 100% het, 1-wild type visual albino
1- pastel non-het, 2- pastel 100% het, 1- pastel visual albino
1- spider non-het, 2- spider 100% het, 1- spider visual albino
1- bumble bee non-het, 2 bumble bee 100% het, 1- bumble bee visual albino

If these are correct, then 1 in 16 would be the odds for hitting the big pay-off
as I see it, Super Pastel Albino or Bumble Bee Albino, But everything else is pretty cool too.

Thanks again, Jeff

Paul Hollander Oct 27, 2006 10:52 AM

I got the same Punnett square results you did.

Spider albinos and bumblebees are pretty cool. But I've been asking myself what a pastel albino would look like. So far I haven't come up with an answer. Worst case scenario, in my opinion, would be a snake that just looks like an albino. It would be worth digging around the net to see if anyone has already produced that combination.

Paul Hollander

DZBReptiles Oct 27, 2006 11:46 AM

Well at least my headache wasn't for nothing.

I have looked for an Albino Pastel and the best I have come up with are Pastel 100% Hets. My interest is more in the possibilty of the Super Pastel Albino ( no wild type offspring) not that there is anything wrong with wild type, but there is already plenty of them.

Also there seems to be alot of interest in a pure white animal( leucy's, snowballs) but what about a 95-99% orange animal (AKA Killerbee Albino). All are the long shot and a considerable investment in time and money, but I already have the livestock (1.1- visual albinos, 1.0- 100% Het, 0.2- 66% Hets( not yet proven out), 1.1- lemon pastels, 0.2- pastels, & 0.2- high white spiders) and hopfully I am not going any where soon (God willing).

Plus I still produce Bees, Pastels, Spiders and Albinos along the way, which not only do I really like, but despite all the talk of falling prices, I think still have and will continue to have real value not only to the "Market" but to a great hobbie.

Thanks for your time.

Jeff

Paul Hollander Oct 27, 2006 06:25 PM

Sounds like a doable plan to me. Amd I think a killerbee albino would be a very cool snake. Keep us posted on the results, please.

Paul Hollander

Eric21 Nov 05, 2006 08:48 AM

Mark and Kim Bell produced one in 2004. Look:

http://www.ralphdavisreptiles.com/matrix/traits/albino_pastel.asp

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