Samples are ground into a fine powder and soaked in EDTA, which chelates calcium and dissolves the bone matrix.
Modern DNA from researchers or the environment is "fresher" and more intact than aDNA, making it easy for a tiny amount of modern DNA to overwhelm the ancient sample. 2. Sample Selection and Preparation Ancient DNA: Methods and Protocols
The silica-based extraction method is the industry standard. DNA binds to silica in the presence of high concentrations of chaotic salts, allowing impurities to be washed away before the DNA is eluted into a clean buffer. 4. Library Preparation and Sequencing Samples are ground into a fine powder and
Success begins with choosing the right material. The (part of the skull) and tooth cementum are the "gold standards" because their high density protects DNA from environmental leaching. Ancient DNA: Methods and Protocols
Synthetic DNA "adapters" are attached to the ends of the fragments, allowing them to bind to the sequencing platform.