Assertion: hybrid necrosis | /r/AtLocation | various stages of fixation
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text: Hybrid necrosis stands out for several reasons: it is common and phenotypically similar in many different species; alleles can be recessive or dominant; it is at various stages of fixation in different taxa, which perhaps represent snapshots of a dynamic process; and a body of work that has accumulated over the last eight decades suggests underlying causes and selective pressures that might drive its repeated evolution.