What are the two main sources of genetic variation?

Answer

Genetic variations have basically two main sources. These two main sources are environmental factors and incomplete cellular replication. One occurs within the species, the other is do to external factors.
Q&A Related to "What are the two main sources of genetic variation..."
Random mutations. Gene shuffling(crossing over) and mutations are the two main sources of genetic variation. Mutation and recombination.
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Sexual reproduction as both parents contribute to the genetics of the child. Random mutation that causes minor changes (ie eye color) Genetic drift, in breeding.
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The ultimate source of genetic variation in populations is via MUTATION. One is always different! report this answer. Updated on Thursday, February 02 2012 at 05:01AM EST. Source:
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