Which of these laboratory product innovations allowed scientists to first directly observe the structure of DNA, leading to revolutionary advances in genetics and molecular biology?

Scientific research depends not just on brilliant minds but also on revolutionary tools and equipment. Throughout history, certain product innovations have fundamentally transformed how scientists work and what discoveries became possible. This trivia tests your knowledge about one such pivotal laboratory innovation that dramatically accelerated scientific progress across multiple fields. Can you identify which technology breakthrough truly changed the game?

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X-ray crystallography (developed by Rosalind Franklin and others)
Nuclear magnetic resonance spectroscopy (NMR)
Scanning tunneling microscope (STM)
Polymerase chain reaction (PCR) machine