As first pointed out by Horowitz [212], and as our simulations showed ([112];
see also the section on energetics of the Zn world below), an abiogenic formation
of complex molecules (e.g. long polymers) would imply the presence of an overwhelmingly
larger amount of simpler molecules of the same type (shorter polymers).
The first replicators could therefore utilize the available shorter fragments;
with time, they could acquire the ability to attain building blocks by cleaving the
(phosphor)ester bonds in other surface-adsorbed zymes. Owing to this development:
(i) a coupling mechanism could be established that, with some modifications,
has been in use ever since – the polymerization of RNA and DNA is still
driven by cleavage of the phosphoester bonds in ATP; and (ii) the genuine fight
for survival could begin, since each replicator became a potential prey for others
As first pointed out by Horowitz [212], and as our simulations showed ([112];see also the section on energetics of the Zn world below), an abiogenic formationof complex molecules (e.g. long polymers) would imply the presence of an overwhelminglylarger amount of simpler molecules of the same type (shorter polymers).The first replicators could therefore utilize the available shorter fragments;with time, they could acquire the ability to attain building blocks by cleaving the(phosphor)ester bonds in other surface-adsorbed zymes. Owing to this development:(i) a coupling mechanism could be established that, with some modifications,has been in use ever since – the polymerization of RNA and DNA is stilldriven by cleavage of the phosphoester bonds in ATP; and (ii) the genuine fightfor survival could begin, since each replicator became a potential prey for others
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