A mutation, usually a point mutation (where a single 'letter' in the genetic code is changed).
When a mistake happens in the process of copying DNA, the result is called a Mutation.
Variations in copying of DNA can lead to mutations, which are changes in the DNA sequence. These mutations can result in genetic diversity, evolution, and potentially lead to genetic disorders or diseases.
Transcription is only the copying of DNA, so of course, it occurs at the DNA which is in the nucleus of a cell.
Interphase @jamazins
DNA replicating/copying
When an error occurs in making a copy of DNA, we call it a mutation.
DNA replicating/copying
Mutation
During the S stage DNA synthesis occurs. (copying of the DNA)
translation
The process of copying DNA is called DNA replication. It involves the separation of the DNA double helix into two strands, each of which serves as a template for the synthesis of a new complementary strand. The end result is two identical DNA molecules, each containing one original strand and one newly synthesized strand.
The purpose of copying DNA is that, after mitosis, each daughter cell each has a complete set of DNA and is genetically identical.