广义上讲,性状遗传性衡量的是群体成员间的差异在多大程度上可以用基因差异解释。
In broad terms, the heritability of a trait measures the extent to which differences among members of a population can be explained by differences in their genetics.
NHS提供PGD技术已经超过10年时间了,用来治疗一些早在儿童时期发病的严重疾病,例如囊性纤维化(属遗传性胰腺病)或者叫泰萨氏病的一种神经学疾病。
PGD has been offered by the NHS for more than a decade for serious diseases that come early in childhood, like cystic fibrosis or Tay Sachs, a neurological disease.
对各株系间的根井遗传距离采用UPGMA法对群体进行聚类分析表明群体中很少存在代表性重复现象。
Genetic distances of each pair of lines are calculated by Nei's method. The results of cluster by method UPGMA show that the population has less over presentation.
利用SSR引物的种间通用性,本研究分别从杨属和柳属中各随机筛选出10对SSR引物,对17个杨树品种和20个柳树品种的遗传关系进行了分析。
In this research, random screening of 10 SSR primers from Populus and Salix, respectively, and the genetic relationship among 17 poplar cultivars and 20 willow cultivars were studied.
同时表明,研究群体间遗传及遗传变异程度,血清蛋白多态性是一种切实可行的方法。
At the same time, we can infer that serum protein polymorphism is a practical method used for studying the degree of heredity and variance.
计算各样本间的相似性系数和遗传距离,并采用UPGMA法对遗传距离进行了聚类分析。
Genetic similarities were calculated using simple matching coefficient, and the phenogram was constructed by using UPGMA method. Three cultivars of n.
应用鱼类主要组织相容性复合体(MHC)基因来探讨鱼类种群间遗传结构,寻找分子遗传标记。
The major histocompatibility complex (MHC) of fish was used to study the genetic structure as a molecular genetic marker of four populations of red common carp.
扩增产物间的成对比较可产生非相似性矩阵,此矩阵用于构建遗传相似性的树状系谱图。
Comparison among all possible a pair of data were calculated to produce non-similarity matrix and to build up a pedigree tree.
对不同抗虫棉品种间几个主要性状的差异显著性、遗传力及相关性进行了分析。
This paper analyses the diverse significance, hereditary strength and dependence of several main characters among the varieties of different Bt gene anti-insect cottons.
为探讨2型糖尿病和非糖尿病群体间的遗传多态性差异,寻找2型糖尿病的致病相关基因。
To explore the genetic polymorphic difference between Type 2 diabetes and non diabetes controls, and to find out the related disease genes of Type 2 diabetes.
了解不同种族人群间血管紧张素转换酶基因多态性的遗传特点,是研究血管紧张素转换酶基因I/D多态性与疾病相关性的基础和前提。
To know genetic features of ACE gene polymorphism of individuals of different nationalities is the basis and prerequisite to study the correlation of ACE gene I/D polymorphism with diseases.
杉木在树高、胸径和材积等生长性状间有较高的表型和遗传相关性。
The relatively high phenotype and genetic correlation of Cunninghamia lanceolata exist between growth characters of height, dbh and volume, etc.
两个群体间的相似性系数高达0.9187,彼此间的遗传距离仅为0.0848,体现出两个人工选育群体的遗传分化程度较低。
Nei's genetic identity and genetic distance between the two populations were 0.9187 and 0.0848, respectively, which indicated low genetic differentiation between the two populations.
初步推断我国蒙系绵羊品种间的遗传分化主要是自然选择(生境异质性)作用的结果。
It is concluded that genetic differentiation of sheep breeds of Mongolian Group in China is mainly the result of natural selection (different living conditions).
从猪蛋白质(酶)多态性和DNA分子水平上估测出亲本种群间的遗传距离,探讨它们与基因杂合度及经济性状杂优率之间的关系。
Parental genetic distances were evaluated by plasma protein(enzyme) polymorphisms and DNA molecular level. Their relationship with gene heterozygosities and heterosis of various traits were analyzed.
在生物克隆、遗传合成以及基因改造的生物学时代,李山痴迷于所有有生命的造物间相似性大于差异性的观点。
In the age of biological clones, genetic synthesis and transgenic biology, Li Shan became fascinated with the idea that all living creatures have more similarities than differences.
对过氧化物酶同工酶分析为棉属种间亲缘关系和四倍体起源的研究提供生化遗传依据的可行性进行了阐述。
The feasibility of using peroxidase isozyme to study interspecific relationships and the origin of allotetraploids in Gossypium was discussed.
龙眼叶片膜脂脂肪酸组分含量反映着龙眼品种间耐寒性遗传上的差异,可作为耐寒性的鉴定指标。
The proportion of the membrane fatty acids in leaves indicated that there were genetic differences of cold tolerance among the varieties and it cou…
大多数性状间的加性遗传相关明显。因此,杂交早代对这些性状的直接和间接选择都是有效的。
The variation made up in all of the traits was mostly inherited, and the additive genetic correlations between each pair of the majority of traits studied were apparent.
致害性的转化是渐变的,在世代间似有遗传积累。
It seemed that there was a heritable accumulation from generation to generation.
遗传相关性分析表明,除褐斑病病情与根产量、含糖率及产糖量呈负相关外,其余3个性状间均呈正相关。
The analysis of genetic correlation indicated that there was a positive relation among the root yield, sugar content and sugar yield except Cercospora leaf spot resistance.
目的:探讨单胺氧化酶a和单胺氧化酶b基因与伴精神病性症状双相情感性障碍间的遗传关联性。
Objective: to investigate the genetic association between MAOA and MAOB genes and the bipolar affective disorder with psychiatric symptoms.
目的:探讨单胺氧化酶a和单胺氧化酶b基因与伴精神病性症状双相情感性障碍间的遗传关联性。
Objective: to investigate the genetic association between MAOA and MAOB genes and the bipolar affective disorder with psychiatric symptoms.
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