In what areas of human practice are values about the structure of DNA and its analysis used? During DNA replication

In what areas of human practice are values about the structure of DNA and its analysis used? During DNA replication, errors occur with a certain frequency. To which of living organisms would an increase in the frequency of such errors lead? In what cases is this possible?

Every person can now recognize their DNA. Scientists decode DNA, there are even several methods for this.
DNA analyzes are used not only in medicine, but also in law and the police. With the help of DNA, it is possible to determine the father of the child even when the baby is in the womb. DNA cannot be seen by fingerprints. DNA analysis takes at least a week. Such results will affect the entire life of a person.