Miller's experiment - An electric discharge, was created in a closed flask containing CH₄ - H₂ - NH₃, and water vapour at 800^o C, thus creating condition of early earth with reducing environment high energy radiations and high energy radiations and high temperature, in the laboratory. This resulted in the formation of amino acids, supports chemical evolution of life. 

Miller's experiment does not support theory of Biogenesis it supports chemical evolution of life.

Detailed Answer: 

Experimental set-up : In a closed flask containing CH₄, H₂, NH₃ and water vapour at 800^oC, 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. 

Conclusions : 

(i) It provides experimental evidence for the theory of chemical origin, 

(ii) It showed that the first non-cellular form of life was created about 3 billion years ago. 

(iii) It showed that non-cellular biomolecules exist in the form of DNA, RNA, polysaccharides and protein.