DNA is fundamental to the biology of all life on Earth, but how many of us actually know what it is or what it's made of?

Biologically active RNAs, including transport, ribosomal and small nuclear RNA (tRNA, rRNA, snRNAs) fold into unique structures guided by complementary pairing between nucleotide bases.

Both uracil and thymine pair with adenine, but they differ in their chemical ... One type of mutation, called a point mutation, occurs when a single nucleotide is changed. In RNA, a point mutation can ...