State the theory of Biogenesis. How does Miller's experiment support this theory?

Explanation

The theory of biogenesis states that a living organism arises from other living organisms. Experimental evidence of chemical evolution/Miller's experiment. Experfment was performed by S.L. Miller and H.C. Urey in 1953.
Experimental.set-up: In a closed flask containing `CH_(4), H_(2), NH_(3)` and water vapour at `800^(@)C,` electric discharge was created. The conditions were similar to those in primitive atmosphere. Observations: After a week, they observed presence of amino acids and complex molecules like sugars, nitrogen bases, pigments and fats in the flask.
Conclusion : (i) It provides experimental evidence for the theory of chemical origin.
(ii) It showed that the first non-cellular form oflife was created about 3 billion years ago.
(iii) It showed that the first non-cellular biomolecules existed in the form of DNA, RNA, polysaccharides and protein.