模型核苷酸序列中的反向重复和镜像重复
Inverted and mirror repeats in model nucleotide sequences
摘要:
我们分析和数值研究的概率性质的反向和镜像重复的模型序列的核酸。我们考虑完美和非完美重复,即具有错配和缺口的重复。所考虑的序列模型是独立同分布(i.i.d.)序列、马尔可夫过程和长程序列。我们发现,相关序列中的重复序列的数量显着大于i.i.d.。并且这种差异随着长范围序列的重复长度呈指数增加。
英文摘要:
We analytically and numerically study the probabilistic properties of inverted and mirror repeats in model sequences of nucleic acids. We consider both perfect and non-perfect repeats, i.e. repeats with mismatches and gaps. The considered sequence models are independent identically distributed (i.i.d.) sequences, Markov processes and long range sequences. We show that the number of repeats in correlated sequences is significantly larger than in i.i.d. sequences and that this discrepancy increases exponentially with the repeat length for long range sequences.
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