DNA proofreading

DNA proofreading is a natural error-checking process during DNA replication. As cells copy their DNA, specialized enzymes scan the newly made strands for mistakes, such as incorrect base pairs. When an error is detected, the enzyme pauses, removes the incorrect piece, and replaces it with the correct one. This process helps ensure that genetic information is accurately passed on, reducing mutations. Proofreading is a crucial quality control mechanism that maintains the integrity of an organism’s genetic code, preventing errors that could lead to diseases or genetic disorders.