What are effects of mutation and selection pressur on evolution?
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MUTATION :
It is any event that changes genetic structures, any alteration in the inherited nucleic acid sequence of the genotype of an organism.
It is caused by mutagens.
Examples of mutagens are x - rays, ultraviolet rays, some chemicals etc.
SIGNIFICANCE OF MUTATION IN EVOLUTION:
1)Mutation are the raw material for evolution.
2)Mutation are sudden and random changes in population.
3)Mutation are sudden change in DNA .
4)Mutations are directionless.
5)Mutations are generally harmful and recessive whereas variation taking place in evolution are dominant and beneficial.
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