Rather, DNA was first identified ... possible by recent advances in model building, or the assembly of possible three-dimensional structures based upon known molecular distances and bond angles ...

This structure, announced in their famous paper in the April 1953 issue of Nature, explained how the DNA molecule could replicate itself during cell division, enabling organisms to reproduce ...

These bases are the rungs of the DNA ladder. (It takes two bases to form a rung -- one for each side of the ladder.) A sugar molecule, a base, and a phosphate molecule group together to make up a ...

Francis Crick and James Watson with a model of the DNA molecule At midday on 28 February 1953, Francis Crick and James Watson walked into The Eagle pub in Cambridge and announced “We have ...

no matter what the underlying molecular mechanisms. These predictions were as follows: According to the semiconservative model, after one round of replication, every new DNA double helix would be ...