What Causes Mutations in Living Organisms?
Mutations are changes to the sequence in nucleotides in genetic material. Mutations are the basis of DNA variation, which provide organisms with differentiation, which enables evolutionary enhancements and improves survival when environmental conditions change drastically. Most mutations, however, have no effect. They originate from cell division that is completed before DNA damage is repaired, from ingested chemicals, from natural radiation sources and from viruses.
