Wednesday, 15 August 2018

Evolution

Evolution is a process of change in generation to generation heritable characteristics. One of the visual results of evolution is biodiversity in world.

Due to a long evolutionary process, speciation and extinction of population member happens. Speciation is formation of new species and extinction is loss of any species.

In phylogenetics there found extra-ordinary relationship of existing species with extinct species.

At first Charls Darween discover the evolutionary theory by natural selection process in his book Origin of species.

The process of changing of gene to gene is called evolutionary mechanism. Evolutionary mechanism may be in four kinds.

Sexual selection
Genetic drift
genetic mutation
Gene migration


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