ALLOPATRIC SPECIATION 1. Allopatric speciation requires total genetic isolation by geographic separation. 2. For example, a population of rodents could transfer seeds of the plant to a neighboring valley. 3. The isolated plants must adapt to a different environment. Over time they develop different traits than the parent population. 4. Eventually, the two populations will not be able to interbreed. Thus, the isolated population has evolved into a new species. SYMPATRIC SPECIATION 1. Sympatric sp