基因型

At the same time, however, the propensity to choose someone with slightly similar genes can also avoid the problem of outbreeding - the mixing of genes that are too different.

专家认为，人类爱选与自己基因相异的人为配偶的主要原因有两点，一是具有较大差异 MHC 基因的父母生出的后代具有较好的免疫系统，其次是避免配偶有非常相似的 MHC 基因型，这样可以避免近亲繁殖。

The frequency of genotype AA in prolific group and normal group were lower than low prolificacy group. It can be inferred that gene B made positive effect in prolificacy in Jizhong-goat, and gene A made negative effect in prolificacy.

高产群和普通群体的从基因型频率都比相应的低产群要低，可推测等位基因B对冀中山羊高繁殖性能有正向作用，而A基因对冀中山羊的繁殖性能有负向效应。

The genic polymorphism is that there are two or more genotypes in the same locus of chromosome in the group of random mating. It is an important factor to determine the susceptivity of desease, the diversity of clinical symptom and the reaction of medication.

所谓基因多态性是指在一随机婚配的群体中，染色体同一基因座位点上有两种或两种以上的基因型，它是决定人体对疾病易感性、临床表现多样性及药物治疗反应差异性的重要因素。

Allelic and genotypic frequencies of the examined polymorphism were not significantly different in disease subgroups.

已经检验的基因多态现象中等位基因和基因型频率在疾病的亚群之间没有显著差异。

Objective To analyze the relationship between genotype and phenotype of vitelline macular dystrophia (VMD2) gene in a family with Best disease, and to provide the theoretical basis for gene diagnosis of Best disease.

目的观察Best病家系卵黄样黄斑营养不良基因(VMD2)基因型与表现型之间的相互关系，为建立Best病基因诊断方法提供理论依据。

A gene can have many alleles and individuals can have a homozygous or heterozygous genotype.

一个基因可有许多等位基因，而个体可有纯合或杂合的基因型。

The frequencies of CBS C homogenetic type (13.5%) and C allele (43.9%) in ischemic group were higher than those in control group (6.0% and 38.0%, respectively).

患者组CBS基因C纯合基因型和C等位基因频率分别为13.5%和43.9%，对照组分别为6.0%和38.0%。

Methods One hundred thirty PCOS women and one hundred seventy five normal women as controls were enrolled in this study. The genotypes were screened by polymerase chain reaction-On/off switch and the product was isolated by electrophoresis on a 2.5% agarose gel containing ethidium bromide and visualized using an ultraviolet transilluminator.

应用On/off Switch-聚合酶链反应及琼脂糖凝胶电泳分离技术分析130例多囊卵巢综合征患者及175例对照组妇女TNF-α基因rs3179060C/A多态，比较rs3179060C/A两组等位基因及基因型与PCOS及其高雄激素之间的关系。

Relative fitness experiments for the populations of lambda-cyhalothrin-susceptible, NILs-RR and NILs-RS strains of Spodoptera exigua, showed that relative finesses of NILs-RS and NILs-RR were 0.870 and 0.893, in comparison with that of SS strain. The intrinsic rates of natural increase of SS, NILs-RR and NILs-RS were 624.7, 543.6, and 557.8 respectively. There was no significant difference in the fitness between SS and different resistant lambda-cyhalothrin genotypes (NILs-RS and NILs-RR) of Spodoptera exigua.

对构建的甜菜夜蛾敏感种群、近等基因系高效氯氟氰菊酯抗性种群和近等基因系低抗性种群生命表分析表明，以SS种群为参比，NILs-RS、NILs-RR种群的相对适合度分别为0.870、0.893，抗高效氯氟氰菊酯不同基因型甜菜夜蛾SS，NILs-RS和NILs-RR三种群净增殖率分别为624.7， 543.6和557.8，无显著差异，表明高效氯氟氰菊酯的抗药性未引发甜菜夜蛾适合度变化。

Methods A PCR-based RFLP procedure was employed to detect the alleles and genotypes of PPARγ gene in 111family trios including 333 subjects of Han descent population in the north of China.

采用PCR技术和限制性内切酶片段长度多态性的方法，检测中国北方汉族111个核心家系，共333个研究对象的PPARγ基因的等位基因和基因型。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。