Nota de FísicaPublicado
Biogenesis and the Growth of DNA-Like Polymer Chains: a Computer Simulation
Hans J. Herrmann; C. Tsallis
1987
Dados da publicação
- Autores
- Hans J. Herrmann; C. Tsallis
- Tipo
- Nota de Física
- Status
- Publicado
- Data de publicação
- 1987
- Descrição
- We study, through computer simulation, a crucial step of Biogenesis, namely the growth of self-replicating codified DNA-like polymers starting from a mixture of oligomers. We have adopted the growth scheme that has been recently proposed by Ferreira and Tsallis which incorporates usual ideas of autocatalysis through complementary pairs and within which a central role is played by the hydrogen-like links (characterized by the probabilities <math>\operatorname{p_{AT}}</math> and <math>\operatorname{p_{CG}}</math> of chemical bonding of the A−T and C−G pairs respectively) between the two chains of the growing polymer. We find that the average equilibrium polymeric length ξ diverges, for any fixed ratio <math>\operatorname{(1-p_{AT})/(1-p_{CG}})</math> as <math>\xi \propto 1 /\sqrt{1-p_{AT}}</math>. Selection of patterns may happen at all stages and in particular at chemical equilibrium. Selection occurs via two different mechanisms: (i) away from the critical point <math>\operatorname{p_{AT}=p_{CG}=1}</math> if <math>p_{AT} \neq p_{CG}</math>; (ii) both on and away from the critical point if the initial concentrations of nucleotides (A,T, C and G or their precursors) are different.
- Ano
- 1987
- Número
- CBPF-NF-022/87
- Vínculo com tese
- Não
- Vínculo com bolsa
- Não