What type of enzyme is DNA polymerase?

DNA polymerase is the enzyme responsible for synthesizing new DNA strands by adding nucleotides to a pre-existing chain, which is a vital function during DNA replication. It works by attaching complementary nucleotides to the growing strand based on the template strand's sequence. This process ensures that the genetic information is accurately copied and passed on during cell division.

The activity of DNA polymerase is crucial for maintaining the integrity of the genetic material, as it not only builds the new strand but also possesses a proofreading ability to check for errors and make corrections. Thus, its primary role is to extend a DNA strand by incorporating the correct nucleotides, which is a fundamental process for cellular replication and function.