Modern Synthetic Theory of Evolution:
In spite of the limitations of the theory of natural selection many evolutionary biologists tried to modify the original proposition of Darwin in order to establish the Darwinian concept of evolution. The modified form of the theory of natural selection is known as Modern Synthetic Theory.
This theory is based on the ideas of heredity, isolation, mechanism of origin of variation, etc. After the publication of the theory of natural selection, it created a sensation throughout the countries of the world and almost all scientists gave enough importance to this concept of evolution. However, there were also several critics of this theory and therefore, it took a modified shape in subsequent periods by his followers. The current views of natural selection are regarded as Modern Syntheses of Natural Selection or Modern Synthetic Theory.