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 ...

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?

Nearly all of the cells within a single organism include exactly the same DNA. DNA is a linear molecule composed of four types of smaller chemical molecules called nucleotide bases: adenine (A ...

DNA molecules are large and complex. They carry the genetic code that determines the characteristics of a living organism. The backbone of the DNA double ... pairing rule. A nucleotide consists ...

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 ...