Collaborative Research: A Simulation Approach To The Evolution of The G-Matrix

协作研究：G 矩阵演化的模拟方法

• 批准号: 0448268
• 负责人: Adam Jones
• 金额: --
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-04-15 至 2009-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0448268&HistoricalAwards=false
• 关键词: Collaborative; Research; Simulation; Approach; Evolution

In this project, three investigators will collaborate on computer simulation studies of G-matrix stability and evolution. The G-matrix is a statistical description of ghe pattern of genetic variances and covariances among quantitative traits. It is the central concept of inheritance in theoretical models for the evolution of characters that are affected by many genes. Many important characters are in this category (e.g., body size, intelligence, susceptibility to some kinds of disease). Consequently the stability and evolution of the G-matrix are important issues because they affect our ability to predict how such characteristics evolve. One aim is to determine how randomly varying selective pressures affect G-matrix stability. Another aim is to determine how details of genetic architecture (mutation, linkage, dominance, and epistasis) affect both the stability and evolution of the G-matrix. The overarching goal is to determine the conditions under which the G-matrix is likely to be stable or unstable, with a focus on selection regimes that are likely to prevail in nature. In the course of this project we will train graduate and postdoctoral students by including them in our planning and writing sessions. We will also build a website that will enable students, teachers and researchers to run simulations of G-matrix fluctuation and evolution.

在这个项目中，三名研究人员将合作进行G矩阵稳定性和演化的计算机模拟研究。G矩阵是数量性状间遗传方差和协方差模式的统计描述。它是遗传的中心概念，在理论模型中，性状的进化受许多基因的影响。许多重要的角色都属于这一类别（例如，体型、智力、对某些疾病的易感性）。因此，G矩阵的稳定性和演化是重要的问题，因为它们影响我们预测这些特征如何演化的能力。一个目的是确定如何随机变化的选择性压力影响G-矩阵的稳定性。另一个目的是确定遗传结构的细节（突变、连锁、显性和上位性）如何影响G矩阵的稳定性和进化。总体目标是确定G矩阵可能稳定或不稳定的条件，重点是自然界中可能普遍存在的选择机制。 在该项目的过程中，我们将通过将研究生和博士后纳入我们的规划和写作课程来培训他们。我们还将建立一个网站，使学生，教师和研究人员能够运行G矩阵波动和演化的模拟。