I still dont get it ?

[sassy-pants]

Well i know if you breed a Recessive with a Recessive you will get a het for the BP you are trying to produce like piebald x piebald you would get het for piebald .

Not quite. There are two ways your snakes can have a gene, they can either be heterozygous (het) for it, where, basically, they only have half the gene, or homozygous, where they have the whole gene.

They are considered "visual" recessives when they are homozygous and you can see the trait.

A recessive snake has both genes necessary to show the trait, so it can only pass on the recessive gene. If you mix two like recessive snakes (albino x albino, ghost x ghost, pied x pied, etc), you will have a clutch of 100% homozygous recessive snakes, or "visual" recessives (so a full clutch of albinos, ghosts, pieds, etc)

A recessive snake bred by a normal snake will produce 100% het snakes for whatever the gene is (so albino x normal = clutch of 100% het albinos).

A co-dominant gene is actually an incomplete dominant gene, where your snake is "het" for whatever complete dominant gene (supers) is, but it happens to be visual. A pastel x normal makes a clutch of 50% normals, 50% pastels. A super pastel is homozygous for pastel, so it can only pass on the pastel gene. Therefore, a super pastel x normal makes a clutch of (het) pastels. They are not called het pastels because you can see the morph, even though it is an incomplete gene.

You can also breed snakes that are heterozygous with snakes that are homozygous, resulting in a different distribution of genes. A het albino x albino cross gives you 50% albinos and 50% het albinos. The het albinos are 100% het for albino because they definitely carry the recessive gene. When you mix a het albino x het albino, your clutch should come out as 25% albino, 50% het albino, 25% normal. Since the hets and normals look the same, they are all considered to be 66% possible het albino, since 2/3 of the non-visual snakes are heterozygous for albino, but you can't tell just by looking at them exactly which ones.

Co-dominants, when bred to a normal, produce 50% co-doms, 50% normals. These are easy to tell because the incomplete dominant genes show. When you breed pastel x pastel, your clutch looks like the het to het above, 25% super pastel, 50% pastel, and 25% normal. With a crossing like that, you don't have possible hets because you can see which ones are pastel and which are normal.

Beyond that, if you want to make combo snakes, the genetics get a bit fussier. I can go into it, if you'd like, but I recommend wrapping your mind around the single genes first, since all of it builds on itself.

Hope that helps!