👉 An exonuclease is a type of enzyme that cleaves DNA into two strands, separating them. Exonuclease enzymes are found in bacteria and viruses, but they can also be present in some plants and fungi. Exonuclease enzymes are characterized by their ability to break down the double-helix structure of DNA molecules. They do this by cutting the DNA strand at specific positions called "exons" or "bases". Once cut, the two strands form a single helix, which
