Francis Crick and James Watson with a model of the DNA molecule At midday on 28 February ... Without her knowledge, one of her colleagues showed the picture to James Watson. When he saw it ...

Rosalind Franklin and Maurice Wilkins were studying DNA. Wilkins and Franklin used X-ray diffraction as their main tool -- beaming X-rays through the molecule yielded a shadow picture of the ...

In 1950, biochemist Erwin Chargaff found that the arrangement of nitrogen bases ... molecule. The King's team took an experimental approach, looking particularly at x-ray diffraction images of DNA.

The basic units (monomers) of DNA are nucleotides. These nucleotides consist of a deoxyribose sugar, phosphate and base. The nucleotides are identical except for the base, which can be an adenine ...