The Discovery of DNA's Structure . Created by Rosalind Franklin using a technique called X-ray crystallography, it revealed the helical shape of the DNA molecule. Watson and Crick realized that DNA was made up of two chains of nucleotide pairs that encode the genetic information for all living things. Similarly one may ask, how did the double helix model become the accepted structure of DNA? The clues in Franklin's X-ray enabled Watson and Crick to build a model that explained the specific structure and properties of DNA . A double helix looks like a twisted ladder. However, these bonds would form only between certain base pairs- Adenine with thymine, and guanine with cytosine. Additionally, who discovered double helical structure of DNA and when? In the early 1950s, American biologist James Watson and British physicist Francis Crick came up with their famous model of the DNA double helix. Subsequently, question is, who were the two scientists that discovered the...