Alleles are two different genes that can make a gene pair. Example: a normal gene and an albino gene. This gene pair makes a het albino snake. Example: a mojave gene and a lesser gene. This gene pair is one way to get a blue-eyed white ball python.
Alleles have slightly different DNA sequences, but they are located in the same place in the genome.
The albino mutant gene and the mojave mutant gene are not alleles. They cannot make a gene pair because the have different locations in the genome.
Hope that helps.
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