Some up front knowledge: a nucleic acid sequence is a succession of letters indicating the order of the nucleotides forming alleles within a DNA (GACT) or RNA (GACU) molecule.

Scientists have recently doubled the number of letters available for DNA to 8. Read about it in one of the world’s leading scientific journals:

Synthetic DNA seems to behave like the natural variety, suggesting that a broader swathe of chemicals could support life than the four that evolved on Earth