A nucleosome is a segment of the DNA wrapped around a core of histones. Here is a view of the double helix -- the subject of Rosalind Franklin's Photo 51. With the help of her photograph ...

For the first time, scientists have witnessed the very moment DNA begins to unravel, revealing a necessary molecular event ...

Double-stranded DNA ... photos look relatively sparse, Dr. Franklin interpreted them as representing distances between the nucleotides that were arranged in a spiral shape called a helix.

Rosalind Franklin made a crucial contribution to the discovery of the double helix ... DNA molecule. Unknown to Franklin, Watson and Crick saw some of her unpublished data, including the beautiful ...

The backbone of the DNA double helix consists of alternating phosphate and deoxyribose sugar molecules. Interlinking bases hold the two sides together. As A is complementary to T and C is ...