Question

what causes mutation ?​

Answer 1

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Mutations arise spontaneously at low frequency owing to the chemical instability of purine and pyrimidine bases and to errors during DNA replication. Natural exposure of an organism to certain environmental factors, such as ultraviolet light and chemical carcinogens (e.g., aflatoxin B1), also can cause mutations.

Answer 2

Answer:

It can be caused by environmental factors such as ultraviolet radiation from sun or can occur if an error is made as DNA copies itself during cell division....