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Hybrid Zones definitions

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  • Hybrid Zone
    Area where members of distinct species meet and produce offspring with mixed ancestry.
  • Gene Flow
    Movement of genetic material between populations, influencing genetic similarity or divergence.
  • Speciation
    Process resulting in the formation of genetically distinct populations or species.
  • Reproductive Isolation
    Mechanisms preventing gene exchange between populations, maintaining species boundaries.
  • Secondary Contact
    Event where previously separated populations come back into contact, allowing potential interbreeding.
  • Fusion
    Outcome where high genetic exchange erases species boundaries, merging populations into one.
  • Stability
    Condition where a hybrid area persists, maintaining distinct species despite some hybridization.
  • Reinforcement
    Natural selection favoring traits that prevent interbreeding, strengthening species differences.
  • Prezygotic Barrier
    Mechanism preventing formation of hybrids by blocking mating or fertilization between species.
  • Allopatry
    Situation where populations exist in separate, non-overlapping geographic areas.
  • Sympatry
    Condition where populations occupy the same geographic area and may encounter each other.
  • Hybrid Fitness
    Relative reproductive success of offspring with mixed ancestry compared to parent species.
  • Species Boundary
    Genetic or reproductive distinction separating one species from another.
  • Natural Selection
    Process favoring traits that enhance survival or reproduction in a given environment.
  • Parent Population
    Original group from which hybrids or new species arise through interbreeding or divergence.