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The discovery of DNA's double helix structure in 1953 by James Watson, Francis Crick, Rosalind Franklin, and Maurice Wilkins was arguably the most important scientific discovery of the 20th century. It revealed the molecular basis of heredity and opened the door to molecular biology, genetic medicine, and biotechnology.
Franklin's X-ray crystallography images — particularly "Photo 51" — were crucial to Watson and Crick's model, though her contribution was long underappreciated. Watson and Crick won the Nobel Prize in 1962 along with Wilkins; Franklin had died in 1958.
Understanding DNA has given us everything from genetic fingerprinting to the Human Genome Project, from understanding cancer at the molecular level to developing COVID-19 mRNA vaccines. It is the foundation of modern medicine.
# Top 10 DNA Discovery facts
- 1The human genome contains approximately 3 billion base pairs of DNA
- 2If you stretched out all the DNA in one human body, it would reach the Sun and back 70 times
- 3Humans share 98.7% of their DNA with chimpanzees
- 4Rosalind Franklin's crucial contribution was not recognized by the Nobel Committee
- 5The Human Genome Project took 13 years and cost $3 billion to complete
Fascinating Facts
- ◆The human genome contains approximately 3 billion base pairs of DNA
- ◆If you stretched out all the DNA in one human body, it would reach the Sun and back 70 times
- ◆Humans share 98.7% of their DNA with chimpanzees
- ◆Rosalind Franklin's crucial contribution was not recognized by the Nobel Committee
- ◆The Human Genome Project took 13 years and cost $3 billion to complete
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