A change in a DNA sequence.
A change in a DNA sequence. This can either be caused by an external factor, such as radiation or chemical exposure, or by an error in copying the DNA sequence during cell division. While many mutations have little or no effect, some mutations in genes in the sex cells may produce a new character or trait that can be inherited.
This can either be caused by an external factor, such as radiation or chemical exposure, or by an error in copying the DNA sequence during cell division. While many mutations have little or no effect, some mutations in genes in the sex cells may produce a new character or trait that can be inherited.