Читать книгу Cell Biology - Stephen R. Bolsover - Страница 101

Deoxyribonucleic acid can be damaged by a number of agents, which include oxygen, water, naturally occurring chemicals in our diet, and radiation. Because damage to DNA can change the sequence of bases, a cell must be able to repair alterations in the DNA code if it is to survive and pass on the DNA database unaltered to its daughter cells.