You're likely referring to James Watson and Francis Crick, who are credited with discovering the double helix structure of DNA in 1953. This discovery revolutionized our understanding of genetics and earned them a Nobel Prize in 1962.

Here's how their contribution impacted genetics:

* Understanding DNA structure: Their model showed how DNA replicates and stores genetic information. It revealed the mechanism of heredity.

* Unlocking the secrets of inheritance: This breakthrough laid the foundation for understanding how genes are passed down from one generation to the next and how mutations occur.

* Advancement in molecular biology: Their discovery sparked a revolution in molecular biology, leading to advancements in genetic engineering, gene therapy, and personalized medicine.

While Watson and Crick's work was groundbreaking, it's important to acknowledge that they were not the sole contributors to the discovery. Others, like Rosalind Franklin, made significant contributions through X-ray diffraction studies, which provided crucial evidence for the double helix structure.

Let me know if you'd like to know more about the history of DNA discovery or specific applications of genetics!