The origins of life (OOL) is one of most perplexing, speculative, and controversial topics in all of biology, but it has always been one of my favorite issues to read about, discuss, and even debate. There are a variety of OOL scenarios hypothesized by researchers, each of which is fraught with its own specific and particular set of difficulties. Most people that have taken a biology class are familiar with the Miller-Urey experiment, wherein what was at the time believed to be the Earth’s early atmosphere was simulated, electricity pulsed through the “primordial atmosphere,” and the resulting compounds were analyzed. Produced in the experiment were a variety of biologically relevant compounds, including some of the alpha amino acids used in biological systems.
Considered to the be the quintessential OOL experiment, Miller-Urey initiated more than 60 years of research into the chemical origins of life, also known as abiogenesis. Any given abiogenesis scenario will have to account for a number of specific things in order to address the question adequately. These include, but are not necessarily limited to:
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