What is the role of variations in evolution ?
Answers
Variation, either genotypic or phenotypic is an important factor that aids in evolution as it is associated with natural selection that changes the allele frequency in a given population.
This helps an individual to survive and adapt to the the changing environment, which we call ' survival of the fittest'.
Evolution and variation are interrelated and without any variation, evolution is not possible.
Having the identical traits throughout all the generations would not be favouring their existence and thereby hinders evolution.
Variations role in Evolution:
The term evolution is used to define the changes which were taking place on the organisms for certain generations. This evolution involves sexual and natural selection; and genetic drift which is mainly impacted by environmental factors.
The variation takes place through the genetic changes which increases or decreases the alleles. This variation helps the organisms in their survival as these modifications are helping them in adaptations. This genetic drift takes place through mutation sometimes which is caused by random mating and homologous and chromosomes recombination.
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