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?

Within double-stranded DNA, the nitrogenous bases on one strand pair with complementary bases along the other strand; in particular, A always pairs with T, and C always pairs with G. Then ...

Double-stranded DNA consists of two polynucleotides that are arranged such that the nitrogenous ... This base-to-base bonding is not random; rather, each A in one strand always pairs with a ...

It consists of just a few kinds of atoms: carbon, hydrogen, oxygen, nitrogen ... to guanine (G), and adenine (A) will "pair" to thymine (T). How the bases are arranged in the DNA is what ...

It shows a hexagonal ring with nitrogen atoms at positions 1 and 3 ... In DNA, cytosine pairs with guanine through three hydrogen bonds, forming a stable base pair. The sequence of these base pairs ...