Im still confused

[Jay_Bunny]

I still cannot wrap my head around co-dom and dominant. They sound the same. Breed a pastel to a normal, you get 50% chance of pastel. You breed a pin to a normal, you get a 50% chance of pins. Pastel is co-dom and pin is dom, so what makes them different?

[PythonWallace]

Breeding a pastel to a pastel will throw 50% super pastels, hence the codom. Pin x pin will only produce more pins and normals. Co-doms have a super form. Mojos, lessers, butters, womas, pastels, yellow bellies, phantoms, fires, etc. all have super forms so they are co-doms. Spiders and pinstripes don't have a visual super form, so they are dominant. You can think of co-doms as visual hets for the super forms, ie. lessers are hets for BELs, and since you can visually tell a lucy from a normal it's a co-dom.

[ajeff]

Co-doms have visable heterozygous markings. Doms just have the homozygous markings. Well, thats they way I like to think of it

[ladywhipple02]

I believe the difference has to do with the alleles the snake carries... a snake carrying a dominant gene carries two alleles for that gene. A snake carrying a co-dom trait only carries one allele for that gene.

For instance: a pastel (co-dom) bred to a pastel (co-dom) creates a super pastel (dominant).

I think?


EDIT: Ah, nevermind... Jake's the man

[littleindiangirl]

I still cannot wrap my head around co-dom and dominant. They sound the same. Breed a pastel to a normal, you get 50% chance of pastel. You breed a pin to a normal, you get a 50% chance of pins. Pastel is co-dom and pin is dom, so what makes them different?

A co dominant gene works the same in a punnet square as a dominant gene, the major difference is the expression of those genes.

The Co-dominant gene is just that, when in the heterozygous form is only being partly expressed. The Pastel is the heterozygous form, the homozygous form is the Super Pastel.

When it is a pastel, the gene is only showing a small part of its true potential, we can't really see the full expression unless it is homozygous (Super)

To see the full expression of a co-dominant gene, you MUST have a homozygous animal. The homozygous form of a pastel is a Super Pastel. A Super Pastel is the full expression of the co-dominant gene.


A dominant gene is fully expressed whether it is het or homo. There is no difference between the heterozygous animal and the homozygous animal.

[PythonWallace]

Co-doms have visable heterozygous markings. Doms just have the homozygous markings. Well, thats they way I like to think of it

Dominant mutations actually show the visual trait as a heterozygous animal, just like co-dominant animals do. The difference is in the homozygous appearance of the animal. All first generation mutations that throw visual offspring are first labeled as proven dominant. It takes another generation of breeding to see if dom x dom has a new, visable trait in the homozygous form. If it does, it's now proven to be a co-dominant trait. If it doesn't throw supers in a homozygous animal it's still only a dominant trait.

[MarkS]

Well, when something is co-dominant, or incomplete dominant, that implies that there are different looks between the normal form, the heterozygous form and the homozygous form. A pastel, which is a co-dominant mutation, is kind of a blend between a normal looking ball python and a super pastel. Genes come in pairs, so when you have only one half of the gene with the pastel mutation (the heterozygous form), it still affects the look, but not enough to completely overpower the normal look. A Dominant mutation DOES completely overpower the normal look whether it's in the heterozygous form or the homozygous form and so the heterozygous form and the homozygous forms look the same as each other.

[ADEE]

so a spider... wouldnt that be codom because it can make a super, or is it considered dom since its already a visual.

mojave is a het for bel right? so is the mojave co dom?
spider is dom, but what happens if you mix spider (dom) and pastel (dom) to make bee, wouldnt that mean the animals are codom?

so confusing

[littleindiangirl]

so a spider... wouldnt that be codom because it can make a super, or is it considered dom since its already a visual.

I've never seen a super spider

[ADEE]

gotcha.. so it is dom.