- 更多网络例句与个体遗传型的相关的网络例句 [注:此内容来源于网络,仅供参考]
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The heterozygote genotypes in F2 population in this type of species are different from those in general species in which the genetic recombination occurs in meiosis of both male and female.
这类物种的杂交F2群体中杂合子基因型的与一般物种中雌雄个体的减数分裂细胞都发生遗传重纽的F2群体杂合子表型不同。
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Homozygosity for a haplotype that was identical by descent between two of the affected individuals identified a locus for the disease gene within a 17.4 Mb interval on chromosome 15, a region containing 296 genes.
对两个受累个体完全相同的遗传单倍型纯合性分析发现,疾病基因的基因座在第15号染色体17.4 Mb的区间内,该区域包含296个基因。
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But, in the stillbirth case, the genetic test showed the genotype of the calf was a homozygote normal.
而一只难产而死的仔牛遗传检测的结果为不带此不良基因的正常型个体。
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Johannsen experimented with the Princess bean and found that if the self-fertillzing parent plants were from a mixed population, then selection did indeed work. He described the offspring of single parent as a ' pure line ' and stated that they were genetically identical. In 1905 he coined the terms ' phenotype ' to describe the outward appearance of an individual and ' genotype ' to describe the genetic makeup of an individual.
约翰逊用菜豆做实验,结果发现:如果自体受精的亲本植株来自一个混合群体,那么选择确实是有效的,而被称为"纯系"的单亲后代则表明它们在遗传上是一致的。1905年他首次采用"表现型"来描述某一个体的外观形状,用"基因型"来描述某一个体的遗传组成。
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In order to reduce calculation error, the frequency distribution of average values is used to compute the mixed distribution's digital features of each component distribution, thereinto, the number of the component distribution is determined by AIC, choose the number that meets the minimum value of AIC as the component number of mixed distribution, and the other parameters are estimated by EM algorithm; Secondly, because each component distribution is corresponding to a kind of major gene genotype, according to the values of the average and variance of the each component distribution, we can use the limit error of the normal distribution to plot each individual into the correspondent component distribution, namely into correspondent major gene genotype. Then we regard each major gene genotype as a treatment level of one-way analysis of variances, and the one-way multivariate analysis of variance is carried out to calculate the covariance matrix of major gene effect, covariance matrix of polygene effect, covariance matrix of environment effect and so on; At last, combining the weights of the each component distribution of mixed distribution, we can calculate the variance of major gene effect, the variance of polygene effect, environmental variance and the genetic gain of the quantitative trait.
为减小计算误差,本研究采用均值的频数分布来计算各成分分布的数字特征,其中成分分布个数根据AIC准则,选择使AIC值达到最小的成分分布个数作为混合分布的成分分布数,分布中其它参数的确定利用EM算法来估计;其次,每个成分分布对应一种主基因基因型,根据各个成分分布的均值和方差,利用正态分布的极限误差将每个个体划分到相应的成分分布中,即相应的主基因基因型中,将每种主基因型作为单因素方差分析的一个处理水平,对其进行单因素的多元方差分析,分别计算主基因效应协方差阵、多基因效应协方差阵、环境协方差阵等参数;最后结合混合分布中各成分分布的权重即各主基因基因型的分离比例,计算主基因效应方差,多基因效应方差和环境方差,以及遗传力等参数,进而计算该数量性状的遗传进展。
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The phenotypically uniform indica rice variety IR64 was chosen for study of the source and inheritance of within cultivar residual variation using a set of SSR markers.
用SSR标记对个体间表型一致的籼稻IR64(由育种家提供的种子,简称S0)品种内的残余遗传变异的来源以及变异的遗传模式进行了研究。
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The results showed that the clonal reproduction was preponderant, but it has still a high genetic diversity (Ho=0.7148). At the same time, Corylus heterophylla Fisch genetic individual was found. A single cluster was basically a genetic individual; adjacent clusters were basically the same genotype and clonal reproduction has larger percentage.
结果表明:平榛虽然克隆繁殖占有优势,但仍具有较高的遗传多样性(Ho=0.7148);同时确定了平榛的遗传个体,同1株丛内个体基本上为1个独立的遗传个体,相邻的株丛个体基因型基本一致,克隆繁殖比率较大。
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The result ofpairwise Fst and Neutrality tests revealed significant genetic differentiation amongfour populations,and evolution of mtDNA COI gene incompliance with the Neutralitytheory.The genetic distance was the biggest between HEB and JXL,and was thesmallest between SDT and JXL among the 4 populations.
遗传多样性研究采用了线粒体DNA COI基因序列、RAPD和PCR-RFLP三种分子标记研究大猿叶甲4个地理种群的遗传结构和群体遗传多样性。1、对长约335bp的mtDNA COI片段进行序列分析,在4个群体64个个体中,共发现37个单倍型,总变异位点35个,多态位点29个,含量(63.68%)大于含量(36.32%)。4个地理种群的核苷酸多样性指数分别为,0.082、0.035、0.099、0.186。
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On the basis of a simplified assumption that the target loci are introgressed and the genetic background are independent,the probability of selecting individuals with desired genotypes in each generation is approximately estimated combining analytical approach and simulation according to the graphic genotypes of backcrossing parents.The minimal sample size required to obtain at least one desired individual with a given probability is estimated.
在假定所需转移的目标基因座与遗传背景之间为相互独立的简化假设下,可以通过将解析方法与基于回交亲本图示基因型的模拟方法相结合,近似地估计出在每一世代中选到所需基因型的概率,进而估算出在一定概率水平下至少获得一个符合要求的个体所需的最小样本容量。
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The results of microsatellite amplification showed that (1) the genetic relationship is closer among the same body colour bio-type individuals of green peach aphid than that between the red and the green bio-type individuals from three kinds of host plants.
微卫星扩增结果表明:(1)来自不同寄主植物上的同一体色生物型个体之间的遗传关系近于不同体色生物型个体之间的遗传关系。
- 更多网络解释与个体遗传型的相关的网络解释 [注:此内容来源于网络,仅供参考]
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allele frequency:等位基因频率
任何世代群体内所有个体同时出生,同时生长发育,同时达到性成熟,同时死亡. 也就是说,群体年龄结构(age distribution)相同. 描述群体遗传结构最常用的遗传参数是等位基因频率(allele frequency)和基因型频率(genotypic frequency).
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allotype:异型
(二) 免疫球蛋白的同种异型 同种异型(allotype)是指同一种属不同个体所产 生的同一类型 Ig,由于重链或轻链恒定区内一个或数个氨基酸(即遗传标志)不同,而表现的抗原性差异.目前已在 IgG 和 IgA 重链(γ和α)及κ型轻链恒定区 也发现有决定同种异型抗原特异性的遗传标志,
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blending inheritance:融合遗传
"换句话说,詹金主张普遍出现后来遗传学文献称之为"融合遗传"(blending inheritance)的现象. 考虑到詹金选用六个手指的个体作为典型的畸变例证,则这种说法尤其令人感到惊讶,因为自莫培兑和Reaumur以来早已知道多趾畸形(六指也属于此)是没有中间型的遗传.
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epistasis:遗传隐匿
基因(gene) 单个元素,位等位基因(allele) 数据值,属性,值基因座(locus) 位置,iterator位置表现型(phenotype) 参数集,解码结构,候选解遗传隐匿(epistasis) 非线性染色体又可以叫做基因型个体(individuals),一定数量的个体组成了群体(population),
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fertility:生殖力
自然选择作用是指不同的遗传变异体的差别的生活力(viability)和(或)差别的生殖力(fertility). 从这一种观点出发,达尔文所指的自然选择正如Th.Dobzhansky精辟归纳的:自然选择的本质就是一个群体中的不同基因型的个体后代基因库作出不同的贡献.
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locus:位点
纯合子 ( 纯合体 , 同型综合子 , 同型结合体 ) 是指同一位点 (locus) 上的两个等位基因相同的基因型个体,即遗传因子组成相同 如AA,aa . 相同的纯合子间交配所生后代不出现性状的分离.
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phenotypic correlation:表型相关
所谓表型相关(phenotypic correlation)就是同一个体的两个数量性状度量值间的相关. 造成这一相关的原因很多而且十分复杂,一般而言,可将这些原因区分为两大类:一类是由于基因的一因多效和基因间的连锁不平衡造成的性状间遗传上的相关.
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polygenic:多基因性
(三)HLA 复合体的遗传特征(多基因性,多态性,单元型遗传,共显性遗传,连 锁蒸平衡) 多基因性(polygenic)即在同一个体中,HLA 复合体基因座位在数量 和结构上具有多样性;多态性(polymorphism)是指在一随机婚配的群体中,
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transgressive inheritance:超亲遗传
142、超亲遗传(transgressive inheritance):在F2或以后世代中,由于基因重组而在某种性状上出现超越亲本的个体的现象. 143、微效多基因(minorgene):基因数量多,每个基因对表型的影响较微,所以不能把它们个别的作用区别开来,称这类基因为微效基因.
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age distribution:年龄结构
任何世代群体内所有个体同时出生,同时生长发育,同时达到性成熟,同时死亡. 也就是说,群体年龄结构(age distribution)相同. 描述群体遗传结构最常用的遗传参数是等位基因频率(allele frequency)和基因型频率(genotypic frequency).