Question

Mistakes can happen during DNA replication, and if they are not repaired it can result in a mutation. Certain mutations can lead to diseases like cancer. What is a mutation and what are the DNA repair mechanisms cells have? Describe one of them.

Answer 1

Mutations result either from errors in DNA replication or from the damaging effects of mutagens, such as chemicals and radiation, which react with DNA and change the structures of individual nucleotides. All cells possess DNA-repair enzymes that attempt to minimize the number of mutations that occur