How did the discovery of DNA’s double-helix structure relate to the Human Genome Project timeline?

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The discovery of the double-helical structure of DNA by James Watson and Francis Crick in 1953 served as a foundational milestone in genetics that preceded the Human Genome Project (HGP) by several decades.123

While the HGP was officially initiated in 1990 to map the entire human genomic sequence, the 1953 discovery provided the essential understanding of how genetic information is stored and replicated, which made the subsequent goal of sequencing the human genome conceptually possible.14

The timeline of the two events converged symbolically at the conclusion of the project: the HGP was declared complete in April 2003, a date specifically chosen to coincide with the 50th anniversary of the publication of Watson and Crick’s landmark paper describing the double-helix structure.1