生物变异

关于生物变异的偶然性和必然性

On chance and necessity in mutations of living things

血清骨唾液酸蛋白的生物变异性研究

Biological variability of serum immunoreactive bone sialoprotein

报告显示在克隆猪和正常繁殖的猪并无二致，都存在生物变异。

They report that there is just as much variation in appearance among the clones as among the non-clones .

该算法利用生物变异机制实现抗体的自适应调节，使系统具有自适应、自学习能力。

The self-adaptation of antibody is realized by the immune mutation mechanism , which makes the algorithm self-learning and self-adaptive .

表型可塑性是生物变异中由环境引起的一种变异，是植物适应的一种重要方式。

Phenotypic plasticity is the environmental modification of genotypic expression and an important means by which individual plants respond to environmental heterogeneity .

可以反映和说明生物遗传变异的一般规律。

It can reflect and express the general rule of creature 's inheritance and change .

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 .

减数分裂既是高等生物染色体变异的敏感期，又是变异得以顺利传递给子代的关键期。

The meiosis is not only a sensitive stage of chromosomal variation , but also a critical stage of variant transmission for higher life .

本病需与后颅窝蛛网膜囊肿、囊性新生物和变异的巨大枕大池以及重度小脑发育不全鉴别。

This disease should be differentiated from variation of the large cisterna magna , arachnoid cyst of the posterior forssa , cystic neoplasm , and severe hypoplasia of the cerebellum .

生物不对称性变异在研究胁迫对水生生物的影响中的应用

Application of Fluctuating Asymmetry in Studying Effects of Stress on Aquatic Organism

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 .

热带西太平洋海区生物-光学变异性

Bio-optical variability in West Tropical Pacific Ocean

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

主要就生物不对称性变异的原理、实际测定中的问题及该方法在水生生物研究中的适用范围进行了论述。

In this paper , the fundamentals of fluctuating asymmetry technique in aquatic organism study are discussed .

类星体光变特性的统计分析在此基础上，讨论了生物-光学变异性与海洋物理过程的关系。

In addition , an analysis was made on the relationship between the temporal variability of bio - optical properties and the physical parameters .

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 .

本文利用DNA的结构和复制特点、同源染色体、分离和自由规律以及系谱相关知识，对高中《生物》遗传和变异中常见的计算题进行了归纳和分析。

This paper sums up and analyzes calculation of heredity and variation of senior middle school , that based on some knowledge of DNA constitution , DNA copy , homologous chromosome , law of segregation , law of independent assortment , genealogy .

中国古代对生物遗传性和变异性的认识

The recognition and application of heredity and variation in ancient China

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 .

对染色体进行研究的细胞遗传学是遗传学与细胞学相互交叉与结合的产物，是旨在阐明生物有机体遗传与变异细胞学基础的科学。

Cytogenetics , which focus on the research of chromosome , is the product of the reciprocal chiasmata and combination of genetics and cytology , it aims to demonstrate basic science of organic heredity and variation cytology .

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 .