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Markov model applied to gene evolution

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2 Author(s)
Xinglai Ji ; Department of Biological Sciences and Biotechnology. Institute of Bioinformatics, Tsinghua University, Beijing 100084, China ; Zhirong Sun

The study nucleoti de substitution is very important both to our understanding of gene evolution and to reliable estimation of phylogenetic relationships. In this paper nucleotide substitution is assumed to be random and the Markov model is applied to the study of the evolution of genes. Then a non-linear optimization approach is proposed for estimating substitution in real sequences. This substitution on is called the Nucleotide State Transfer Matrix. One of the most important conclusions from this work is that gene sequence evolution conforms to the Markov process. Also, some theoretical evidences for random evolution are given from energy analysis of DNA replication.

Published in:

Tsinghua Science and Technology  (Volume:6 ,  Issue: 5 )