Estimating long-term mating systems using DNA sequences.
Estimating long-term mating systems using DNA sequences.
复制标题
使用 DNA 序列估计长期交配系统。
作者：
B. Milligan
植物交配系统通常包括自花受精和异交受精的混合。自交的程度对自然种群的遗传组成和交配系统本身的进化有很大的影响，以应对诸如近交衰退等因素。本文描述了一种从群体中个体的等位基因样本中估计长期自花受精率的方法。利用个体内的基因座处的等位基因对和个体之间的等位基因对的系谱。自交的程度与个体内不同的核苷酸位点的数量相对于个体间不同的数量减少的程度密切相关。重要的是，对长期自交的估计在很大程度上与种群规模无关，不受种群规模历史波动的影响;相反，它直接对交配系统本身做出反应。这里概述的方法是最合适的进化问题，其中的长期性质的交配系统是感兴趣的，如确定以前的近亲繁殖和近亲繁殖衰退之间的关系。
Plant mating systems often involve a mixture of self fertilizations and outcross fertilizations. The degree of selfing has a large impact on the genetic composition of natural populations and on the evolution of the mating system itself in response to such factors as inbreeding depression. This paper describes a means of estimating the long-term rate of self-fertilization from samples of alleles taken from individuals in a population. Use is made of the genealogy of pairs of alleles at a locus within individuals and pairs between individuals. The degree of selfing is closely related to the extent to which the number of nucleotide sites differing within an individual is reduced relative to the number differing between individuals. Importantly, the estimate of long-term selfing is largely independent of population size and is not affected by historical fluctuations in population size; instead it responds directly to the mating system itself. The approach outlined here is most appropriate to evolutionary problems in which the long-term nature of the mating system is of interest, such as to determine the relationship between prior inbreeding and inbreeding depression.
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影响因子：
2.9
作者：
Santos-Garcia MO;Karia CT;Resende RM;Chiari L;Vieira ML;Zucchi MI;Souza AP
通讯作者：
Souza AP
影响因子：
3.3
作者：
M. Kuhner;Jon A Yamato;J. Felsenstein
通讯作者：
M. Kuhner;Jon A Yamato;J. Felsenstein
影响因子：
3.3
作者：
M. Nei;F. Tajima
通讯作者：
M. Nei;F. Tajima
影响因子：
1.5
作者：
FELSENSTEIN, J
通讯作者：
FELSENSTEIN, J