EEB362H1 Chapter Notes - Chapter 6: Mimulus, Allopatric Speciation, Reproductive Isolation
7 Nov 2016
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Flower, shape size and colour are very variable across species in the genus mimulus. We restrict our study to sister species comparisons of traits involved . Usually found in abstract, introduction or conclusion: This is from abstract: we present evidence that supports this expectation -sympatric sister species in the monkeyflower genus, mimulus, exhibit greater divergence in flower size than allopatric sister species . So what they found was that comparisons of sister-species supported that sympatric sister pairs exhibited greater divergence in flower size (one species got smaller) than did allopatric pairs (flower sizes tended to be similar). Think about these questions: look at strengths through the lens of the hypothesis. Recently diverged sister species with no overlap in their geographic ranges suggests allopatric speciation without secondary contact, a process that does not require divergence in traits conferring reproductive isolation. The authors based their comparisons on sister groups as determined by a phylogenetic analysis.
