The only source of entirely new genetic material is mutation. It is a new genetic variant that occurs in nature.
What is a mutation?
A mutation can be defined as any alteration of the genetic material (genome) of the cells of an organism.
Mutation represents the primary source for which a new genetic variant occurs (and then can be fixed) in nature.
Mutation can be beneficial, neutral, or deleterious depending on the environment in which the organism lives.
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