Comparison between Spontaneous and Induced mutations

Spontaneous and Induced mutations: 
Major differences

Spontaneous mutations
Induced mutations
1.      It is caused by natural agents, so it is also known as natural mutations or background mutations.
It is caused by man
2.      Frequency of mutation is very low (about one per million genes)
It is very faster
3.      It is due to  mutagens in many cellular products such as formaldehyde, nitrous acid, peroxides etc
It is due to physical mutagens (radiations, temperature etc) and chemical mutagens (mustard gas, vinyl chloride, acridine dyes, ammonia etc)

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