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Which came first, DNA or protein?
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Which came first, DNA or protein?
There is Miller-Urey experiment
https://en.wikipedia.org/wiki/Miller–Urey_experiment
Did you hear about it?
If you will heat, pass current (spark in experiment, in the real world thunderbolt, lightning), cool down, then repeat, mixture of gases such as CH4, CO2, H2O, NH3, HCN, H2, N2, O2.. after a while there will be created the all kinds of organic molecules, amino acids, proteins, DNA. e.g. you can make C5H5N5 (adenine) from 5 HCN.