Double helical structure of DNA was shown by

Solution (By Examveda Team)

The double helical structure of DNA was shown by Watson and Crick.
The structure of DNA was proposed by James Watson and Francis Crick in 1953, they stated that it is a double helix and twisted-ladder structure of deoxyribonucleic acid (DNA).
They marked a milestone in the history of science and gave rise to modern molecular biology, which is largely concerned with understanding how genes control the chemical processes within cells.