I'm happy you're open to learning more about evolution. Genetic linkage is a fairly advanced concept. For example, this (great) introductory Yale course doesn'

I'm happy you're open to learning more about evolution. Genetic linkage is a fairly advanced concept. For example, this (great) introductory Yale course doesn't even mention it. http://oyc.yale.edu/ecology-and-evolutionary-biology/eeb-122#sessions http://oyc.yale.edu/ecology-and-evolutionary-biology/eeb-122... Every gene is next to another gene. You are right, the scenario you are detailing is unlikely - correspondingly, it happens very rarely. Complex things we don't understand often seem magical.