If the genes that distinguish Bacillus anthracis,B.cereus and B.thuringiensis from one another are all plasmid-encoded,it might be more correct to consider them as:

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If the genes that distinguish these three bacteria are all located on plasmids, it suggests that they are probably not significant enough to warrant the classification of separate species or even genera. They would likely be considered strains of a single species, as they are very closely related and can even share genetic material.

If the Genes That Distinguish Bacillus Anthracis,B