1. However, genetic and field studies still support subspecies status under the biological species concept . 2. The Biological Species Concept ( BSC ) is a classic example of the interbreeding approach. 3. Van Valen also defined the Biological Species Concept . 4. Most modern textbooks use Ernst Mayr's definition, known as the Biological Species Concept ( BSC ). 5. Thus, exchange of genetic information between individuals is fundamentally important for the development of the biological species concept . 6. He staunchly defended the biological species concept against the many definitions of " species " that others proposed. 7. Mayr invented the biological species concept . 8. :Species are defined as those populations which are genetically isolated-- biological species concept -- i . e ., that don't interbreed. 9. There is also the mathematicalization of population genetics by Dobzhansky, et al ., and the biological species concept of Ernst Mayr. 10. According to Guy Kirwan and colleagues, the Asian birds are separate under any definitions of species except the biological species concept .
