they were the first to discover the structure of DNA
They found it in 1953.
It was a double helix.
James Watson and Francis Crick discovered the structure of DNA.
Francis Crick, James Watson, and James Watson
It is James Watson and Francis CricK In March 1953, Watson and Crick deduced the double helix structure of DNA Watson, Crick, and Wilkins were awarded the Nobel Prize in Physiology or Medicine in 1962 for their research on the structure of nucleic acids.
James Watson and Francis Crick
28th February 1953
the double helix twisted ladder structure of DNA
Crick and Watson have always been very open that they used Rosalind Franklin's x-ray diffraction data to deduce the structure of DNA.