Genetic drift

The authors introduced some important concepts in population genetics, including effective population size, inbreeding, genetic drift and gene flow, and then proposed some areas in which population genetics can be usedfor the conservation of rare and endangered plants.

本文首先介绍了居群遗传学中的几个重要概念──有效居群大小、近交繁殖、遗传漂变和基因流，然后详细叙述了居群遗传学原理在珍稀濒危植物保护中的应用途径和前景。

The genetic diversity of endangered species may be lost due to genetic drift and inbreeding, but this loss is more likely to be a symptom of endangerment rather than its cause.

濒危物种的遗传多样性可能会由于遗传漂变、近交的作用而丧失；但这种丧失更可能是濒危的结果而不是濒危的起因。

Computer simulation was used to determine the random genetic drifts of a biallelic gene locus in closed populations under different initial gene frequencies,population sizes and male-female ratios,based on the assumption that there was no gene mutation and individual immigration between populations.

采用计算机模拟方法研究了不同初始基因频率、群体规模和公母比例下闭锁群体内单个双等位基因座位的遗传漂变。

Premature convergence and genetic drift often occur while applying genetic algorithm to the Traveling Salesman Problem.

用遗传算法解决旅行商问题(TSP)时,经常面临过早收敛和遗传漂移等问题。

For solving effectively premature convergence and genetic drift that often occur in applying Gas to practice,the reason for the premature and genetic drift was analyzed.

为了有效解决遗传算法在实际应用过程中经常面临的早熟收敛和遗传漂移问题,分析了导致早熟收敛和遗传漂移这两种现象出现的原因,针对其主要原因提出了基于模糊聚类的种群分类改进的遗传算法,避免近亲繁殖导致早熟,并将模糊聚类的结果与各种遗传操作有效结合,提高了算法向最优解收敛的准确性和稳定性。

Niching technique is a class of parallel evolution method that suppresses genetic drift by forming and maintaining stable subpopulations.

进化计算存在的遗传漂移现象使种群均匀地收敛于单一的优良解,导致早熟收敛或可选优良解的丢失,小生态技术是一种形成和维持稳定子种群、抑制遗传漂移的并行进化技术。

Analysis of genetic variation and stability of the content of petroleum ether extracts in flue_cured tobacco leaves;

烤烟叶片石油醚提物质量分数的遗传变异及稳定性分析

Studies on the genetic variation of 9 populations of Tricula by SSR-PCR;

SSR-PCR技术研究9种拟钉螺的遗传变异

Nucleocapsid protein gene′s genetic variation of Newcastle disease virus TL1 strain;

新城疫病毒TL1株NP基因的遗传变异研究

The question regarding is taken applicable only with respect to genetic drift.

因此近来繁殖问题只选用于遗传漂变。

It is suggested that the gene flow and genetic drift may play an important role in maintaining the level of intrapopulation variation.

我们认为,基因迁移和遗传漂变对?

Effect of Age Structure of Inbreeding and genetic Drift in animal Populations

年龄结构对群体近交遗传漂变的作用

Simulation of Genetic Drift in Closed Population under Different Initial Gene Frequencies

不同初始基因频率下闭锁群体遗传漂变的模拟

Another possible reason of high differentiation ,could be from the reduced population size that induced the genetic drift.

另外，也可能是在其进化过程中，由于居群的缩小而发生了遗传漂变。

Moreover, “genetic drift、the neutral theory and molecular evolution”also are brought into the system of curriculum content.

另外,把“遗传漂变、中性学说和分子进化”也纳入课程内容体系中。

and add such factors which causes the populationgene frequency to change as “genetic drift、the migration and the sexual selection”;

增加引起种群基因频率发生变化的其它因素,即“遗传漂变、迁移和性选择”;

The Effect of Random Drift on Population Genetic Basis

随机漂变对群体遗传基础的影响研究

She inherited her good teeth from her mother.

她的漂亮牙齿是母亲遗传的。

Analysis and Suppressing Methods of Genetic Drift in Evolutionary Computation

进化计算的遗传漂移分析与抑制技术

The result shows that genetic drift has a strong effect on the loss of genetic diversity.

结果表明 ,圈养大熊猫群体规模小 ,漂变是导致遗传多样性丢失的主要因素。

Genetic effects include inheritable changes resulting from mutations in reproductive cells.

遗传的影响包括再生细胞变异引起的遗传变化。

Genetic and Epigenetic Variation Induced by Tissue Culture in Rice;

水稻遗传和表观遗传组织培养诱发变异

Genetic and Epigenetic Variations of Taxus media L. cv. Hicksii during Process of Dedifferentiation

红豆杉脱分化过程中的遗传和表观遗传变异

Self-tuning of PID Parameter Based on Modified Genetic Algorithm and its Application to Bleaching Temperature Control

改进遗传算法PID参数整定及在漂白温度控制中的应用

GA based optimal planning for free-floating space robot system with dual-arms

自由漂浮双臂空间机器人基于遗传算法的最优运动规划

All Men are Brothers:Heredity and Variation of the Chivalry-admiring Thought;

《水浒传》:尚侠思想的遗传与变异

Allgemeine Genetik ist eine Wissenschaft des Gens und der Variation zu forschen.Wir hatten das Fundament der Zytologie, Gen Material,die Regel des Gens usw.

普通遗传学是一门研究遗传和变异的科学。我们讲了细胞学的基础,遗传物质,和遗传的规律等等。