sentence: Cells fix broken DNA strands on their own using DNA repair.
sentences_before: The DNA-binding domain binds to a specific DNA sequence. The DNA-binding domains bind to both strands on the DNA double helix. DNA-cleaving domains break the DNA strand and cut the gene base pairs out.
sentences_after: Deletion mutations result from missing base pairs after DNA repair.
concept_name: cell
headings: Zinc finger Zinc finger structure ZFN function
categories: Genetic engineering Enzymes