Protocols — Ancient Dna: Methods And

A distribution of very short fragment lengths suggests the DNA is genuinely old rather than modern contamination. Conclusion

Software checks for high rates of C-to-T transitions at the ends of DNA fragments. If these "nicks" are present, it’s a signature of authenticity. Ancient DNA: Methods and Protocols

The study of —genetic material recovered from biological specimens that have not been preserved specifically for genetic analysis—has revolutionized our understanding of evolution, migration, and disease. However, because DNA begins to degrade immediately after death, specialized methods and protocols are required to extract and sequence these "molecular fossils." 1. The Challenges of Ancient DNA A distribution of very short fragment lengths suggests