生物的变异

对《生物的变异》一节内容进行概念转变，并检验和评价概念转变的效果。

Change prescientific conceptions of the biological heredity and variation , and test and evaluate the effect of the conceptual change .

生物群体的变异性是有机体所有类群的一个属性。

The variability of biological populations is an attribute of all organic groups .

褐飞虱生物型的变异动态监测及广谱抗性品种（材料）的筛选

Monitoring of virulences of the brown planthopper and screening of broad-spectrum resistant rice varieties and accessions

生态环境的破坏、工程事故的发生、生物基因的变异，无一不给人们带来相应的困惑。

All of the factors such as the destruction of ecological environment , the engineering accidents and the biology gene mutation , bring confusions to us .

退化沙质草场群落特征及功能群生物量的空间变异性

Spatial Variability of Community Characteristics and Above-ground Biomass of Functional Group in Degraded Sandy Grassland

在模式生物中的自然变异的遗传学研究提供了一个在基因功能分子分析和对适应性及自然选择的进化研究的桥梁。

Genomic studies of natural variation in model organisms provide a bridge between molecular analyses of gene function and evolutionary investigations of adaptation and natural selection .

在各构件物质分配变异系数中，花生物量分配的变异系数相对较大，说明其调节生殖分配的能力较强；

The variation coefficient of biomass ratio was higher in flower than in other organs , which showed that this weed had high ability to adjusting reproduction allocation .

最后分化的过程生物系统的最后变异过程，例如种子成熟或细胞、组织、器官功能达到完善。

The final differentiation processes in biological systems , such as the final ripening of a seed or the attainment of full functional capacity by a cell , a tissue , or an organ .

随着通信和电力事业的高速发展以及移动电话、微波炉、电脑等电气设备的广泛应用，外部电磁环境急剧加强，对生物的遗传和变异产生强大的选择压。

With the rapid development of both communication and power industry and the wide use of mobile phones , microwave ovens , computers and other electrical equipments , the electromagnetism in the environment strengthened greatly . This situation would inevitably put strong selective pressure on biological heredity and variation .

进化树分析显示S21蛋白可在一定程度上反映生物的进化及遗传变异趋势。

The phylogenetic tree drawn by ClustalW and Phylip software indicated that the relationship of S21 from different species corresponded to the evolutionary trend of ribosomal .

生物的进化是物种变异与适应的辩证发展过程。

Biological evolution is the dialectical developing process of mutation and adaptation of species .

3从植物种群水平、植物功能群水平到群落水平，地上生物量的年度间变异性逐渐降低，稳定性逐渐增加。

From population level to functional group level , and then to community level , the yearly-variation of aboveground biomass minimizes gradually and stability increases .

中旱生植物的变异性也较低，在群落层次上，地上生物量的年度间变异系数为13.16%～23.62%。

The variability of intermediate xerophytes is low at ecological type functional groups . At community level , the yearly coefficient variation of aboveground biomass is in the range of 13.16 % ~ 23.62 % .

红皮云杉苗木生物量性状的遗传变异中，4.85%的变异存在于群体间，95.15%的变异来自于群体内。

In the genetic variation of seedling biomass characters of Korean spruce , 4.85 % exists in interpopulation , 95.15 % in intrapopulation , small variation in the ratio of weight of dry and fresh leaf .

该算法基于生物免疫系统的细胞克隆选择学说和生物进化过程中的变异思想构造了自适应变异算子，使系统能够根据环境条件自适应地确定各抗体的变异强度；

In order to make the system decide the mutation intensity of each antibody according to their environment , a self-adaptive mutation operator is constructed based on the cellular clonal selection theory of biological immune system and the mutation ideas of biological evolution process ;