Restriction enzymes are used for cutting DNA at precise locations Vectors are used for the propagation of cloned DNA fragments Libraries of cloned DNA fragments allow searching for a specific DNA fragment
Although DNA replication, repair, homologous recombination occur with high fidelity to ensure the genome identity between generations, there are genetic processes that rearrange DNA sequences and thus lead to a more dynamic genome structure Two classes of genetic recombination for DNA rearrangement: • Conservative site-specific recombination (CSSR): recombination between two defined sequence elements • Transpositional recombination (Transposition): recombination between specific sequences and nonspecific DNA sites
Chapter 25 DNA Metabolism 1. How does a DNA molecule replicate with high fidelity? 2. How are DNA lesions (damages)repaired to maintain the integrity of genetic information? 3. How do DNA molecules recombine (rearrange)? High accuracy, multitude of participants