Abstract
The mutual information is used to reveal of DNA sequences latent periodicity. Latent periodicity of DNA sequence is periodic. ity with low level of homology between any two periods inside DNA sequence. The mutual information between artificial numerical sequence and DNA sequence is calculated. The length of artificial sequence period is changed from 2 to 250. High level of mutual information between artificial and DNA sequences allows to find any type of latent periodicity of DNA sequence. The latent periodicity of some DNA coding regions is considered. For example, 24 exon of Apo B-100 gene from HSAP821 clone contains latent period 84 bases long. The IGF-I receptor gene from HSIGFIRR clone contains the region with latent period 57 bases long. Possible significance of latent periodicity is discussed.
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