The Superhero Issue
Professor Xavier, Wolverine, and Rogue are not like you and me.
Instead, they are X-Men: Mutants with an "enhanced genome" and incredible abilities.
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X-men mutations are (depending on what version of their story you're reading or watching) caused by the X-gene in the mutant's DNA. Their mutant genes are what set them apart from Homo sapiens and make them Homo superiors.