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?

The double helix is a description of the molecular shape of a double-stranded DNA molecule ... Two types of base pairing occur: nucleotide A pairs with T, and nucleotide C pairs with G.

Although DNA is often found as a single-stranded polynucleotide, it assumes its most stable form when double stranded ... to see chromosomes with a standard light microscope, as long as the ...

Chances are you've seen an illustration of DNA's double-helix structure and even pictures of the chromosomes that comprise the human genome. But where and how does the famous double helix fit into ...

A single DNA nucleotide, the base unit of the human genome, is a tiny, tiny thing. Each one is made up of only 30 atoms (plus or minus a few, depending on the base), making it much too small to be ...