I would urge anyone who is looking at this as a snake with an "empty slot" to stop doing so, it will make it easier to understand the possibilities with this girl. There is not an empty slot at the loci on one of this girls chromosomes, there is DNA there but for whatever reason it isn't functioning properly and expressing the pattern/color that it should be. As far as I can see this is happenening for one of two reasons, one being that the copy of the gene is non-functioning as a result of the gene itself being transformed and the other being that it is non-functioning because certain envirnmental factors during development blocked it's function.

If it is the former then this snake will pass on (on the BEL complex locus) functioning mojave genes and non-functioning normal genes, so when bred to a mojave it would produce 1/2 BELs and 1/2 Normals. The BELs would be 1/2 normal BELs and 1/2 BELs with one mojave gene and one non-functioning gene and the normals would be 1/2 normal and 1/2 with one each functioning and non-functioning normal genes. When bred to a normal she would produce 1/2 normals and 1/2 mojaves with all of the normals having a copy of the non-functioning gene.

If it is the latter she will breed just like a mojave and the condition won't be passed down to offspring unless the same environmental conditions that caused the condition in the first place pop up again.

I'm inclined to believe that it is the latter but that is just my $0.02 based on my knowledge of genetics, which comes from what I've read online and in books about herpetoculture as well as 3 years and KU getting my BS in biology and taking genetics classes. Also, I hope that all of that made sense, and keep in mind that I could be completely wrong here, again it is just my $0.02.