DNA is the molecule that holds the instructions for growth and development in every living thing. Its structure is described as a double-stranded helix held together by complementary base pairs. The ...

James Watson, who co-won the Nobel Prize for discovering DNA's structure, was a towering and controversial figure in science. When you purchase through links on our site, we may earn an affiliate ...

The nucleotides are identical except for the base, which can be an adenine, thymine, guanine or cytosine. There are chemical cross-links between the two strands in DNA, formed by pairs of bases held ...