The **Miller-Urey (1953)** experiment demonstrated:
ASpontaneous generation of bacteria
BFormation of simple organic compounds (amino acids, etc.) from $CH_4$, $NH_3$, $H_2$ and $H_2O$ under electric discharge
CDNA is the genetic material
DPhotosynthesis in primitive cells
Answer & Solution
Correct answer: B. Formation of simple organic compounds (amino acids, etc.) from $CH_4$, $NH_3$, $H_2$ and $H_2O$ under electric discharge
Miller and Urey sparked a mixture of methane, ammonia, hydrogen and water vapour (simulating primitive Earth atmosphere) with electric arcs (lightning). Resulting liquid contained urea, amino acids, lactic acid etc. — supporting the chemical-evolution theory.
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