遗传性状

Using the mixture distribution model and the method of maximum likelihood, we developed the method for the genetic analysis of qualitative quantitative traits with use of DH and RIL data.

采用混合分布理论与极大似然法，拓展了适用于双单倍体群体和重组近交系群体的质量－数量性状的遗传分析方法。

It had fine horticultural characters and stable sterility inheritance according to Mendel's law controlled by a pare of nuclear recessive genes.

该两用系综合农艺性状优良，其不育性由细胞核内一对隐性基因控制，败育彻底，能够按照1：1育性分离比例稳定遗传。

Genetic analysis showed the dwarf is controlled by a monogenic recessive gene. We named the dwarf gene Ds.

遗传分析表明，该矮秆性状受隐性单基因控制，我们将其暂定名为Ds。

Sometimes is called "the hereditary particle", because in the multiplicative process, the father generation transmits they DNA partial replicas in the filial generation, thus completes the character the dissemination.

有时被称为"遗传微粒"，因为在繁殖过程中，父代把它们自己DNA的一部分复制传递到子代中，从而完成性状的传播。

Results of allozyme cluster analysis based on Nei's genetic distance agreed with the results of morphological cluster analysis.

以Nei的遗传距离得到的聚类分析结果与形态学性状获得的结果基本一致。

The range of evolutionary theories during "the eclipse of Darwinism" included forms of "saltationism" in which new species were thought to arise through "jumps" rather than gradual adaptation, forms of orthogenesis claiming that species had an inherent tendency to change in a particular direction, and forms of neo-Lamarckism in which inheritance of acquired characteristics led to progress.

在"达尔文主义衰落时期"，进化理论包括各种形式的"骤变说"，认为新种是通过"跳跃"而不是通过逐渐适应产生的；也包括各种形式的直生论，声称物种有着内在的、向某一特定方向变化的趋势；还包括各种形式的新拉马克主义，认为获得性状遗传导致进步。

They are often morphologically distinct from A chromosomes, being smallerand more highly heterochromatic in most cases. B chromosomes do not pair with Achromosomes, and they are inherited in a non-Mendelian way, exhibiting meiotic andmitotic instability and nondisjunction. However, B chromosome DNA is quiteidentical to the corresponding sequence on the A chromosome complement. So far afew B chromosome specific DNA sequence have been identified. Specific DNAsequences on B chromosome have been the attractive research area on Bchromosomes.

现已在千余种植物和近三百种动物中被发现。B染色体与物种中正常染色体不同：独立于整倍体基因组之外，减数分裂时不与A染色体发生联会和配对，细胞分裂后期不分离，非孟德尔遗传，富含异染色质，不含对宿主主要性状有影响的基因等。B染色体DNA的分子组成既与A染色体极为相似，具有A染色体DNA分子组成的一般特征：富含重复序列和转座成分，染色体三大功能组件DNA高度同源；又与之相区别，含有B染色体特异的DNA序列，这些DNA序列可以为探讨B染色体的起源和进化提供有价值的信息。

Methods: The authors set up theF1×NZW backcross mice model and u sed polym orphic microsatellite markers and quantitative trait locus analysis.

建立F1×NZW回交小鼠模型，采用覆盖小鼠19条染色体的多态性微卫星遗传标记及数量性状位点分析进行基因定位。

Eui gene of rice was an important genetic factor to improve outcrossing traits of hybridrice.

水稻长穗颈基因eui是根本上改良杂交稻异交性状的重要遗传因素。

Genetic analyses indicated that the palea mutant trait was controlled by one pair recessive gene.

遗传分析表明，该突变性状由1对隐性基因控制。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。