In DNA, adenine always pairs with thymine (A-T), and guanine always pairs with cytosine (G-C). These complementary base pairs form through hydrogen bonding, creating the iconic double helix structure ...

Comparison of a single-stranded RNA and a double-stranded DNA with their corresponding nucleobases. (Image: Wikimedia Commons, CC SA 3.0) The most common type of base pairing is the Watson-Crick base ...

In its structure, DNA contains a pattern for producing ... Because of the shape of the nucleobases—and the enzymes that handle them—there are strict rules about which nucleobase can pair ...

All five nucleobases that make up DNA and RNA have now been detected in meteorite samples, according to a study published yesterday (April 26) in Nature Communications. The work used recently ...