Epigenetics Comes of Age

Sensory-driven  sympatric speciation is observed and demonstrated in a wide range of animals, from invertebrates (insects) to vertebrates (fishes and amphibiansis). It is based on changes in mate preferences of individuals for particular individuals within a single population that display behavioral traits or specific visual, olfactory and auditory stimuli.   (more…)

The genetic model of speciation requires physical (geographical) isolation of populations as a sine qua non for the formation of new species. Only under geographical isolation spontaneous changes in DNA (genes, regulatory sequences, etc) can accumulate and finally lead to the reproductive (postzygotic) isolation of the populations when they come in contact again.  (more…)