DNA

The article “Four new DNA letters double life’s alphabet,” describes how synthetic bases are used to form a DNA structure. The ability to generate synthetic DNA that even slightly resembles how biological DNA functions is truly phenomenal. However, from a standpoint that defines life in terms of purpose and function, if the synthetic bases are unable to give rise to the molecules necessary for survival or unable to replicate, then I would consider the DNA as non-living. Even if the DNA looks similar in structure and shares a few of the functions of biological DNA, it would be unable to preserve its identity. This demonstrates my initial point that even if something shares some characteristics with a living thing, that does not make it alive.