who gave the first modern theory of organic evolution?
Modern theory of organic evolution was given by Huxley, Dobzhansky nad J.B.S Haldane.
According to the theory the five basic factors involved in the organic evolution are:-
1- Genetic mutation
2- Alteration in chromosome number and structure
3- Genetic recombination
4- Natural selection
5- Reproductive isolation
The above first three factors are responsible for development of genetic variation and the last two are responsible for providing pathway to the evolutionary process.
According to the theory the five basic factors involved in the organic evolution are:-
1- Genetic mutation
2- Alteration in chromosome number and structure
3- Genetic recombination
4- Natural selection
5- Reproductive isolation
The above first three factors are responsible for development of genetic variation and the last two are responsible for providing pathway to the evolutionary process.