A reverting mutation is a type of mutation that can spontaneously return to its original unchanged state. Such mutations are called reverting mutations because they revert or return to the original unmutated DNA sequence.
Reverting mutations occur when the DNA repair process restores the altered nucleotide sequence in DNA to its original, unchanged state. This process is called reversion.
Reversion can occur spontaneously without any external influence or can be induced by mutagens. The likelihood of reversion depends on the type of mutation. For example, point mutations are more likely to revert compared to chromosomal aberrations.
Thus, reverting mutations are reversible mutations that can spontaneously return genetic material to its original unmutated state. This process is called reversion and plays an important role in maintaining genetic stability.