The divergence between the two populations of Rhagoletis must have occurred very rapidly because

The divergence between the two populations of Rhagoletis must have occurred very rapidly because

  • A The apple tree was imported into North America with European settlement approximately 200 years ago
  • B Flies were imported into North America with European settlement approximately 200 years ago
  • C Long-distance rail transport of fruit increased only after the American Civil War (1861 -1865)
  • D Heavy use of gunpowder during the American Civil War (1861 -1865) led to increased mutation rates in many natural populations of plants and animals

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