> Not sure I understand the benefit, it's denser, on the other hand from what I understand DNA generally does have much in the way of size constraints. I'm a l

> Not sure I understand the benefit, it's denser, on the other hand from what I understand DNA generally does have much in the way of size constraints. I'm a layman, but they could use the new base pairs to code for unusual amino acids allowing for proteins with novel chemistry. Also, I think DNA is pretty much only used to encode information, but RNA has important chemical roles (e.g. ribozymes), and the new base pairs open up similar possibilities with that.