To Understand Nature - Computer Modelling between Genetics and Evolution

Details To Understand Nature - Computer Modelling between Genetics and Evolution To Understand Nature - Computer Modelling between Genetics and Evolution

2009-01-11

arxiv.org/abs/0901.1465v1

Biology

Quantitative Biology

Genomics

32 pages, 19 figures

Scientific paper

We have presented the basic knowledge on the structure of molecules coding the genetic information, mechanisms of transfer of this information from DNA to proteins and phenomena connected with replication of DNA. In particular, we have described the differences of mutational pressure connected with replication of the leading and lagging DNA strands. We have shown how the asymmetric replication of DNA affects the structure of genomes, positions of genes, their function and amino acid composition. Results of Monte Carlo simulations of evolution of protein coding sequences have shown a specific role of genetic code in minimizing the effect of nucleotide substitutions on the amino acid composition of proteins. The results of simulations were compared with the results of analyses of genomic and proteomic data bases. This chapter is considered as an introduction to further chapters where chromosomes with genes represented by nucleotide sequences were replaced by bitstrings with single bits representing genes.

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