Reptile & Amphibian Forums

Are there any proven ball python morphs that are on the same chromosome?
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0.1 Albino Burmese Python (Annie)
1.9 Ball Pythons (Salazar and Slytherin, ...)
1.1 Black Samatran Blood Pythons
0.0.3 Spotted Pythons
0.1 Sinaloan Milksnake (looking for a breedable male)
1.1 Snow and Albino Cornsnakes

It would make sense that the Blue-eyed producers are all on the same chromosome. Phantom, lesser platinum, Platinum, Mojave, etc.
There is no conclusive proof to this though.
Since they all produce a Blue Eyed White snake they gene locus might be on the same allele.

Alleles are variants of the same gene. Therefore, the morphs that produce the blue eyed leucistic may be allelic variants of the same Gene.

Just clearing that up, genetically. LOL

Warren

Allele are variants, or mutations of a particular locus on a chromosome. So, if there is a mutation on one allele it is no longer a "normal" genotype (phenotype may or may not be altered at this point). There can be different mutations on the same allele.

Right, this is starting to get confusing, lol. Okay, Indeed alleles are variants of a locus. So, if there is a mutation from one allelic state to another, it is no longer the same allele, it is a new allele. Hence, there cannot be a mutation on the same allele, there are mutations of the same locus, i.e. variant alleles. Now, to get more confusing, theoretically one allele can mutate to another, already existing, allelic state. This is known as a homoplastic mutation, where the alleles are similar in structure, but not in origin. This, however, is unlikely to result in the phenotypic variation that exists between, for example, butters, platty's, Mojaves, etc.

Warren

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Dr Warren Booth
North Carolina State University
Department of Entomology
3309 Gardner Hall
Raleigh, NC 27695-7613

and I think beyond the original question

Besides that, I may have sid something that was incorrect.

Anyway, I get what you are saying.
For some reason I think it is Hom"e"oplastic.

Homoplastic is fine.

(definition: Similar in form and structure, but not in origin. - www.biology-online.org)

Warren
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Dr Warren Booth
North Carolina State University
Department of Entomology
3309 Gardner Hall
Raleigh, NC 27695-7613

>Right, this is starting to get confusing, lol. Okay, Indeed alleles are variants of a locus.

Clarification. A locus is a particular location on one of the chromosomes in the genome. An allele is one of the variant forms of the gene at that locus. If the genome is like a housing development, then a locus is a particular street address, and an allele is one of the different types of houses that could be built at that street address.

Paul Hollander

Nicely put.
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Dr Warren Booth
North Carolina State University
Department of Entomology
3309 Gardner Hall
Raleigh, NC 27695-7613

The thing to watch for is combos that are taking too long to make and you don't hear of any of the homozygous decedents for one of the morphs turning up to even be het for the other. Unfortunately it will take a long time to get enough public info to come close to proving two mutations are on the same chromosome. It's much easier to prove the other way like the quick killer bee indicating spider and pastel probably aren't on the same chromosome or the same for the cinnamon and pastel combos last summer. It would actually be interesting if you could pick up on a combo project appearing to involve two mutations on the same chromosome early as without a crossover all the normal looking babies would be double hets rather than the expected possible double hets.