Contrasting patterns of floral and molecular variation across a cline in Mimulus aurantiacus.

  title={Contrasting patterns of floral and molecular variation across a cline in Mimulus aurantiacus.},
  author={Matthew A. Streisfeld and Joshua R. Kohn},
  journal={Evolution; international journal of organic evolution},
  volume={59 12},
Steep clines in ecologically important traits may be caused by divergent natural selection. However, processes that do not necessarily invoke ongoing selection, such as secondary contact or restricted gene flow, can also cause patterns of phenotypic differentiation over short spatial scales. Distinguishing among all possible scenarios is difficult, but an attainable goal is to establish whether scenarios that imply selection need to be invoked. We compared the extent of morphological and… CONTINUE READING


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