Treatment. There's currently no cure for Parkinson's disease, but treatments are available to help relieve the symptoms and maintain your quality of life. These treatments include: supportive therapies â such as physiotherapy ; medication ; surgery (for some people)
Reinforcement is a necessary requirement for both the parapatric and sympatric theories of speciation. It is the process by which a hybrid zone (an area of contact between different forms of a species) develops into a full species barrier.
Allopatric speciation may occur when a species is subdivided into two genetically isolated populations. Allopatric and allopatry are terms from biogeography, referring to organism s whose ranges are entirely separate such that they do not occur in any one place together.