Initially, which of the following isolating mechanisms is likely to have been the most important in preventing gene flow between the two populations of Rhagoletis?

Initially, which of the following isolating mechanisms is likely to have been the most important in preventing gene flow between the two populations of Rhagoletis?

  • A Temporal isolation due to differences in mating time.
  • B Behavioral isolation due to differences in mating behaviors.
  • C Mechanical isolation due to differences in reproductive structures.
  • D Ecological isolation due to different host plants.

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