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arXiv 1502.00415q-bio.PE
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解耦连续时间突变选择模型中具有有益恢复等位基因的后代的增长概率

Growing Probability of Additional Offspring with a Beneficial Reversal Allele in the Decoupled Continuous-time Mutation-selection Model

Wonpyong Gill

摘要:

使用解耦连续时间突变选择模型,在不对称尖峰景观中计算了具有不同群体大小$N$、序列长度$L$、选择优势$s$、适应度参数$k$和测量参数$C$的具有有益逆转等位基因的额外后代的生长概率。随机区的增长概率在$C<1/Ns^*$时与测量参数成反比,在$C\approx 1/Ns^*$时弯曲,在$C>1/Ns^*$时达到饱和,其中$s^*$为有效选择优势。随机区的饱和生长概率近似为$C\gg 1/Ns^*$和$s^*\ll 1$的有效选择优势。本研究表明,增长的概率在随机区域中的非对称sharping-peaked景观在解耦的连续时间突变选择模型可以描述的Moran两等位基因模型中的增长概率的理论公式。选择优势比是有效选择优势与选择优势的比值,与群体大小、选择优势、测量参数和适应度参数无关,而是随着序列长度的增加而减小。

英文摘要:

The growing probabilities of additional offspring with the beneficial reversal allele for various population sizes, $N$, sequence lengths, $L$, selective advantages, $s$, fitness parameters, $k$, and measuring parameters, $C$, were calculated in an asymmetric sharply-peaked landscape using the decoupled continuous-time mutation-selection model. The growing probability in the stochastic region was inversely proportional to the measuring parameter when $C<1/Ns^*$, bent when $C\approx 1/Ns^*$ and became saturated when $C>1/Ns^*$, where $s^*$ is the effective selective advantage. The saturated growing probability in the stochastic region was approximately the effective selective advantage when $C\gg 1/Ns^*$ and $s^*\ll 1$. The present study suggests that the growing probability in the stochastic region in an asymmetric sharply-peaked landscape in the decoupled continuous-time mutation-selection model can be described using the theoretical formula for the growing probability in the Moran two-allele model. The selective advantage ratio, which represents the ratio of the effective selective advantage to the selective advantage, does not depend on the population size, selective advantage, measuring parameter, and fitness parameter; instead the selective advantage ratio decreases with increasing the sequence length.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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