A basic genetic explanation in this( sorry if I am go through stuff you already know)I am sure there are geneticist out there that have more intricate explanations, and exceptions but for beginner breeding purposes:
For each trait or visible expression of color or pattern (and depending on the morph some times both) there are 2 genes. When breeding, one gene for each trait is "thrown" from each parent to each offspring.
Recessive means for the trait you are looking for-each parent must throw that particular gene. Albino is a perfect example- unless both parents each throw the albino gene your babies will look normal.If you breed het albinos to each other there is no way of knowing for sure if normal looking babies carry the albino gene or not unless you grow them up and breed them to 'prove them out'. some het recessive traits off spring have what we call "markers" but they are not a 100% guarantee ( see the "hunters guide" on this) Visible Albinos can only throw an albino gene. An Albino bred to any other snake besides an albino gene carrier will always produce 100% heterogeneous for Albino offspring.
Co-dom ( also called an incomplete dominant) means that there is a homogeneous version of the gene, but the heterogeneous version also appears different from a normal.
Take pastel for instance-
Super pastel is the homogeneous form of pastel- both genes for the pastel trait in this animal are pastel. This means that if you bred a super pastel to anything it can only throw a pastel gene
Pastel is the heterogeneous form- this means that only one gene in the pair for this trait is pastel. This version looks different from both it's homogeneous version(super pastel) and also from a normal. If you breed a pastel it can either throw a normal gene or or a pastel gene. the babies are either pastel or they are not.
Dominant means that the heterogeneous and homogeneous expressions of the gene look the same. Spider and I believe Pinstripe also, have no visible difference between the homogeneous or heterogeneous versions. even if you bred Spider to spider you would not be able tell which offspring was homogeneous or which was heterogeneous.
A bumble bee carries a pair of genes for 2 traits Pastel & Spider
If you were very lucky it could throw both pastel & spider or if you were unlucky it could throw 2 normal genes. It also could throw a normal/spider genes or normal/pastel genes. ( which would combine with what ever genes the snake you were breeding it with)
Albino X Pin stripe will give you Pinstripe/het Albino or 100% het albinos.
If your goal is to hatch a pinstripe albino, you would need to grow up a pinstripe het albino and breed it back to the Albino parent- (or any other albino gene carrier).
Hope this helps!
Good luck!
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