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Actually, nobody. Unless you're religious. Now, someone did DISCOVER DNA. That person is named Francis Crick, James Watson, and Maurice Wilson.

james watson and francis crick

No, they did not invent DNA. DNA has been around for much longer than that.

DNA or deoxyribonucleic acid is a long molecule that contains our unique genetic code. Like a recipe book it holds the instructions for making all the proteins in our bodies,

It's commonly believe that Francis Crick and James Watson in the 1950s after a lot of hard work but DNA is first discovered Swiss chemist called Johann Friedrich Miescher in the 1800s , which his focus is on the proteins in the cells but found but in 1869 he discovered a strange substance also lurking in the nuclei of the cells. He named it ‘nuclein’, and suspected it would prove at least as vital to cells as protein

[Wow, you're really skilled at copy-pasting from other websites](https://www.yourgenome.org/facts/what-is-dna)!