I've been trying to learn about chocolate and sable for a while now as I've got a line of similar animals that I’m trying to identify. Someone who had worked with them once posted that they thought chocolate and sable might be alleles (two different mutations of the same gene). Sort of like an earlier poster compared to the relationship between lesser and mojave. I don't remember if they had breedings to prove it (like a sable\\chocolate always producing only chocolates and sables but no normals) or if it was just a hunch. Both are considered co-dominant mutations with the heterozygous forms being chocolate or sable and the homozygous (not really correct to call "dominant" as the mutation type is still co-dominant) forms being super chocolate or super sable respectively.
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