If when breeding 2 differnet lines of a gene (Pastel for this example) and the outcome is the homozygous form of the traitSuper Pastel for this example), then that makes them compatible, but it also means that they are the same gene. If they were not the same gene, then you would get a cross of the 2 genes from that breeding. The different lines just mean that diferent people imported animals from Africa, and proved their specific animal to be genetically reproducable. However, once they prove that they are compatible, then they have proven that they are the same thing.









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