THE GENETIC-BASIS OF DEVELOPMENTAL STABILITY .2. ASYMMETRY OF EXTREME PHENOTYPES REVISITED
THE GENETIC-BASIS OF DEVELOPMENTAL STABILITY .2. ASYMMETRY OF EXTREME PHENOTYPES REVISITED
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DOI：
10.1086/285821
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发表时间：
1995-11-01
影响因子：
2.9
通讯作者：
CLARKE, GM
中科院分区：
文献类型：
--
作者：
CLARKE, GM
Soule和Cuzin-Roudy提出，对于某些性状（具有高遗传力的复杂性状），位于表型分布极端的个体在发育上比分布中心的个体更不稳定。这一结果被解释为发生，因为更大的水平的纯合性在极端的个人为一个给定的字符比模态的个人。在他们最初的研究中使用的可能令人困惑的数学程序导致了利用四种昆虫物种的现有数据集重新检查这种“外群”效应。尽管结果证实了某些性状和某些物种存在显着的外群效应，但该现象的基础根据适应度相关的性状特定稳定性模型进行了重新解释。
Soule and Cuzin-Roudy proposed that individuals lying in the extremes of the phenotypic distribution for certain characters (complex characters with high heritability) will be developmentally more unstable for such characters than individuals in the center of the distribution. This result was interpreted as occurring because of greater levels of homozygosity in extreme individuals for a given character than in modal individuals. Potentially confusing mathematical procedures used in their original study led to a reexamination of this ''outgroup'' effect utilizing existing data sets from four insect species. Although results confirm the presence of a significant outgroup effect for some characters and some species, the basis of the phenomenon is reinterpreted in terms of a fitness-dependent character-specific model of stability.