What is a spontaneous mutation?

A spontaneous mutation refers to a genetic change that occurs naturally, without any external influences. These mutations can arise from various biological processes, such as errors during DNA replication or the natural degradation of DNA over time. Unlike induced mutations, which are caused by environmental factors such as chemicals, radiation, or biological agents, spontaneous mutations happen as a part of the organism’s normal cellular activity.

Understanding spontaneous mutations is important because they contribute to the genetic diversity within populations and can lead to evolutionary changes over generations. This natural occurrence allows for the potential development of new traits, which may or may not be beneficial to the organism’s survival and reproduction. Recognizing the distinction between spontaneous and induced mutations is key to understanding genetic variation and the mechanisms of evolution.