1. sider X mojave =?



This is a het X het breeding. The spider phenotype has the heterozygous for the spider genotype - it has one mutant copy of the spider gene matched with one normal copy of the spider gene. Heterozygous means an unmatched pair of whatever gene you are talking about. It does not mean hidden gene or half way to something else although it just happens to work out that way with recessives and co-dominants respectively. Likewise, the mojave phenotype is has the heterozygous genotype for the apparently separate mojave gene. With any het X het breeding you get a 25%/25%/25%/25% split of getting the mutant gene from neither parent, getting only from one parent, only from the other parent, or from both.



25% chance normal

25% chance spider (het for the spider mutant gene)

25% chance mojave (het for the mojave mutant gene)

25% chance spider mojave (double het for both).



If the two parents where het for the same gene then the middle two chances would combine to a 50% chance of being het for that gene and the last would be the 25% homozygous mutant.



2. mojave X pastel =?



Again, het X het.



25% chance normal

25% chance mojave (heterozygous for mojave genotype)

25% chance pastel (het pastel genotype)

25% chance pastel mojave (a double het)



3. Albino X mojave =?



This is a homozygous X het breeding so gives a 50/50 split.



50% het albino only

50% het albino mojave (a double het since mojave is a het for its separate mutant gene - if this breeding where homo X het of the same mutation, example albino X het albino, this would be the 50% homozygous mutant).



4. Albino X Pastel =?



Same homozygous X het type breeding



50% chance het albino only

50% chance het albino pastel (a type of double het)



5. BEL(mojave) X pastel =?



Another homozygous X het breeding. A BEL has two mutant copies of the white snake gene. In this case I assume you are indicating a BEL from mojave X mojave which could be written mojave||mojave to indicate a matched pair of mojave mutant versions. If it where a cross line animal like a lesser||mojave the results would be a little different but keeping in mind that they are both mutations of the same gene no offspring could get both lesser and mojave from the same parent.



50% mojave only (heterozygous genotype for the mojave mutation)

50% mojave pastel (a double het)

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