A statistical model for mapping morphological shape.

A statistical model for mapping morphological shape.
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DOI:
10.1186/1742-4682-7-28
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发表时间:
2010-07-01
影响因子:
--
通讯作者:
Wu R
Wu R
中科院分区:
生物学4区
文献类型:
--
作者:
Fu G;Berg A;Das K;Li J;Li R;Wu R

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生物有各种形状和大小,从细菌、植物、动物到人类。关于生物形状的遗传机制的知识对一系列科学学科具有深远的影响,包括人类学,农业,发育生物学,进化和生物医学。我们推导了一个统计模型,用于定位控制形态形状的特定基因或数量性状位点(QTL)。该模型是在混合物框架内制定的,其中不同类型的形状被认为是由QTL的基因型差异引起的。基于形状对应分析,实现了EM算法来估计QTL基因型特异性形状。用计算机模拟的方法研究了模型的统计特性。通过确定特定的形态形状的QTL,开发的模型将有助于询问,传播和解决许多主要的综合生物学和遗传学问题和挑战,在遗传控制的生物形状和功能。
Living things come in all shapes and sizes, from bacteria, plants, and animals to humans. Knowledge about the genetic mechanisms for biological shape has far-reaching implications for a range spectrum of scientific disciplines including anthropology, agriculture, developmental biology, evolution and biomedicine. We derived a statistical model for mapping specific genes or quantitative trait loci (QTLs) that control morphological shape. The model was formulated within the mixture framework, in which different types of shape are thought to result from genotypic discrepancies at a QTL. The EM algorithm was implemented to estimate QTL genotype-specific shapes based on a shape correspondence analysis. Computer simulation was used to investigate the statistical property of the model. By identifying specific QTLs for morphological shape, the model developed will help to ask, disseminate and address many major integrative biological and genetic questions and challenges in the genetic control of biological shape and function.
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影响因子: --
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