TABLE 1

Mechanisms that cause new inversions to spread

MechanismFate of inversion
Indirect effects: recombination suppression
    Local adaptationNear fixation
    Epistatic selectionFixation
    Deleterious mutationNeutral polymorphism
Drift acting on an underdominant inversionFixation or loss
Direct positive effects of the chromosomal lesion
    Effects of breakpointsFixation or stable polymorphism
    Position effectsFixation or stable polymorphism
    Meiotic driveFixation or stable polymorphism
Hitchhiking with a spreading advantageous mutationNeutral polymorphism