Reptile & Amphibian Forums

Does anyone have any pics?

No one knows. So far, no one has had the luck to produce one.
1 in 16 chance (per egg) to produce one...not easy odds to beat with ball pythons.

Give it another season or two (at most) and hopefully someone will hit the Ball Python Lotto and hatch one out.

That is, if the two traits are compatible.????

Speaking of which, can anyone explain why the lesser/mojave leucistic will not produce another one, but only lessers and mojaves?

it's the same reason: 1/16 would be leucy.

1/4 in order to be codominant traits, not 1/16!!!
-----
www.qualitysnakes.it

right, those would be the odds but one never comes out from a lesr/mojo lucy to normal. Does anyone know why?

If a Lucy cross when bred to a normal only produces Lessers and Butters, or Mojaves, or what not, then that means that they are alleles for each other, meaning the offspring receive one or the other, and not both.

This is different compared to lets say breeding a Killer Bee (Super Pastel Spider) to a normal. In this situation pastel and spider are on different chromosomes, so 100% of the offspring would be pastel, and half of those would theoretically be Bumblebees (Pastel Spiders).

So in essence, if they are occupying same position on the same chromosome(alleles) then you can't get the offspring to exhibit both traits, but if they are in a different position,or on separate chromosomes, then you can.

Hope this helps, typed it up really fast, let me know if you have any more questions, or if something is unclear.

Dan

wow that makes perfect sense, then lesr and mojo are sort of the same trait, and that lucy is the super, ok I get it. But in this theory all the babies would always be either mojo or lesser. Is that the case?

Alleles are DIFFERENT versions of the same gene. So the theory that mojave and lesser are alleles isn't the same as saying the are the exact same mutation, just in the same place.

I haven't seen a ton of results from breeding the cross line leucistics to normals but so far the ones I've seen where consistent with the allele theory, no normals and no leucsitics, only the two grandparent types about 50/50.

It's possible that something similar might be happening with hypomelanistic and axanthic complicating the production of true ghost. If the original double hets are normal looking then axanthic and hypomelanistic probably aren't alleles but the might be mutations of genes that just happen to be close together on the same chromosome. There may be more known individual mutations than chromosomes now and if so it's inevitable that as we try to make combos we will eventually find mutations linked by being on the same chromosome.

When a double het parent is picking which genes to pass on to it's offspring it tends to make a copy of one of its pairs of each chromosome. If hypomelanistic and axanthic are on the same chromosome then the double het has one of each version but tends to pass on a copy of only one or the other. The only way it could pass on a version of that common chromosome with both mutations would be if there where an odd number of crossovers between the two mutant genes while making the copy to pass on from the two originals. Depending on how frequent crossovers are and how close together the two mutant genes are it might take a while breeding double hets to make that first copy of the common chromosome with both mutations.

Now I don't know if double hets for true ghosts have really been breed long enough to make a true ghost all that conspicuous by it's absence and linkage being at all particularly likely for that pair but we are likely to eventually see it somewhere.

Lessers and mojave are two halves of a whole pair of alleles. Meaning they are located at the same loci, and a lesser / mojave lucy will always pass either lesser or mojave onto its offspring but can't pass on both since each parent gives half.
-----
Nita Hamilton
--------------
Ball Pythons
ballpythonworld.com