Question

Mayr's biological concept of species is mainly based on?

Answer 1

A species is defined as a group of closely related organisms which are capable of inbreeding to produce fertile offspring. Reproductive isolation is defined as the inability of a species to breed successfully with its related species because of the behavioral, geographical, physiological, or genetic barriers or differences.

Complete answer:
Mayr's biological concept of species is mainly based on reproductive isolation. A species is defined as a group of closely related organisms which are capable of inbreeding to produce fertile offspring.
Reproductive isolation is defined as the inability of a species to breed successfully with its related species because of the behavioral, geographical, physiological, or genetic barriers or differences. The biological concept of species is mainly founded on breeding isolation which, through the control of hybridization, maintains and maintains the integrity of species.

Additional Information:
Ernst Mayr says that a new species is formed when an existing species splits. A similar idea had been raised by Moritz Wagner in the ${19^{th}}$ century. Dobzhansky explained the role of reproductive isolation in the formation of new species. When a species lives in two different areas, the geographical isolation causes breeding between the groups to reduce or stop. Each group develops features which makes breeding between themself work less well. Eventually, each group becomes ‘good’ biological species, because the two species do not reproduce with each other even if they are together.

Note:
Mayr proposed the famous origin of species concept in his book 'Systematics and the Origin of Species'. The biological species concept groups the members of the same species organisms which have the potential to interbreed to produce fertile offspring. The concept mainly groups the individuals on the basis of their reproductive isolation, which eventually maintains the morphological differences among the reproductively isolated individuals of the same habitat. It is not at all based on methods of reproduction.