31. Allopatric speciation is believed to have played a major role in the variations of the curve-billed.32. These two appear to have been allopatric ever since the Pleistocene, long before the arrival of Europeans. 33. Similar species are allopatric , and there is no data on whether the species freely interbreed or not. 34. It is allopatric or parapatric to these two species and may hybridize with the sulphur-breasted warbler. 35. The results suggest that the parasites were more highly effective in infecting their sympatric snails than their allopatric snails. 36. Baird's and Arnoux's beaked whales have an allopatric ( non-overlapping ) antitropical distribution. 37. Some recent commentators have suggested that the allopatric Lear's macaw and glaucous macaw should be considered conspecifics. 38. Reciprocal silencing on the population level has been proposed as a means of allopatric speciation following a polyploid event. 39. In the experiment, the snails were infected by their sympatric parasites, allopatric parasites and mixed sources of parasites. 40. Allopatric speciation is the evolution of species caused by the geographic isolation of two or more populations of a species.
