DNA can only withstand so much mutation and breakage before it breaks down. An amazing system of repair enzymes keeps decay in check, mostly. Yet, without the crazy complex system of DNA maintenance and repair, life cannot exist, which brings up questions of how we got here.
Location: Loop Road Scenic Drive, Big Cypress National Preserve, South Florida, USA
Notes and links:
- Salisbury DF, Newly discovered DNA repair mechanism, 5 Oct 2010, sciencedaily.com/releases/2010/10/101004112156.htm.
- Rubinson EH et al. 2010. An unprecedented nucleic acid capture mechanism for excision of DNA damage. Nature, 2010; DOI: 10.1038/nature09428.
- Sarfati DM. DNA and bone cells found in dinosaur bone, 23 April 2020, creation.com/dino-dna-bone-cells.
- Chaterjee N, Walker GC. 2017. Mechanisms of DNA damage, repair and mutagenesis. Environ Mol Mutagen. 58(5):235–263; ncbi.nlm.nih.gov/pmc/articles/PMC5474181/.
Thumbnail: Melani Sosa via Unsplash.com