But various combinations of those four bases -- say, A A C G G A C T T A and so on, for thousands of "letters" -- can spell ... known as messenger RNA, makes a copy of the gene sequence and ...

What have we learned about RNA structure and function so far? Although RNA is a single-stranded molecule, researchers soon discovered that it can form double-stranded structures, which are ...

Bioluminescent luciferase enzymes have historically been too dim to use as probes in living tissue. But recent advances have ...

DNA is essentially a storage molecule. It contains all of the instructions a cell needs to sustain itself. These instructions are found within genes, which are sections of DNA made up of specific ...