What is the typical length range for DNA oligos used in experimental DNA data storage demonstrations?

• A. Hundreds to thousands of bases.
• B. Tens to a few hundred bases, often with data payloads around 100–200 bases per oligo plus adapters.
• C. Thousands of bases.
• D. A single base.

Answer: (B)

Short oligos are chosen because they stay within what we can reliably synthesize and read, while still carrying meaningful data. In DNA data storage demonstrations, each oligo typically holds about 100–200 bases of data, and you also include adapter sequences for sequencing or amplification. When you add those adapters, the total length ends up in the tens-to-a-few-hundred bases range. This length is a practical balance: it keeps synthesis costs and error rates manageable and aligns well with standard sequencing read lengths, while still allowing enough payload and redundancy (via encoding schemes and error-correcting codes) to recover the data accurately. Oligos tens to thousands of bases long become expensive and error-prone to synthesize and decode, and a single base would store far too little information to be useful.