Explaining the origins of the genetic code without vertical descent

Fascinating stuff!

Dr. Tom Froese

Here is the result of my two-month stay at the Earth-Life Science Institute (ELSI) of the Tokyo Institute of Technology, which was made possible by ELSI’s Origins Network. I quite like the implication that life could have been an inherently social phenomenon from its very origins!

Horizontal transfer of code fragments between protocells can explain the origins of the genetic code without vertical descent

Tom Froese, Jorge I. Campos, Kosuke Fujishima, Daisuke Kiga, and Nathaniel Virgo

Theories of the origin of the genetic code typically appeal to natural selection and/or mutation of hereditable traits to explain its regularities and error robustness, yet the present translation system presupposes high-fidelity replication. Woese’s solution to this bootstrapping problem was to assume that code optimization had played a key role in reducing the effect of errors caused by the early translation system. He further conjectured that initially evolution was dominated by horizontal exchange…

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