Which scientists are credited with the discovery of the double helix structure of DNA?

• A. Hershey and Chase
• B. Watson and Crick
• C. Franklin and Wilkins
• D. Darwin and Mendel

Answer: (B)

The discovery of the double helix structure of DNA is primarily attributed to Watson and Crick. In 1953, they published a groundbreaking paper proposing the double helix model, which described how two strands of DNA coiled around each other and formed a stable structure. Their work was influenced by earlier research, particularly the X-ray diffraction images taken by Rosalind Franklin and Maurice Wilkins, which provided critical insights into the helical nature of DNA.

Understanding the double helix structure was a significant milestone in molecular biology, as it explained how genetic information is stored and transmitted in living organisms. This model showcased how the complementary base pairing (adenine with thymine and cytosine with guanine) helped maintain the integrity of the genetic code during DNA replication.