遗传效应

The reason is that the c2 distance measurement in correspondent analysis usually overrates the effect of the genes with low frequencies.

蹄型效应经常会歪曲潜在遗传结构的真实形态，其产生主要是因为对应分析中的c2距离不相似测度高估了稀有基因的作用。

Aimed at the arising problems such as the cross-incompatibility and hybrid's sterility during distant hybridization of fruit trees, effects of different treatments on cross-compatibility of distant hybridization in stone fruits were studied based on the former studies, then physiological and biochemical changes during hybridization between plum and apricot were primarily discussed, and rescue and culture system of hybrids' embryos were also conducted, further the genetic variation and principle between the hybrids and their parents were analyzed and methods of identification of hybrids were established.

针对果树远缘杂交过程中存在的杂交不亲和性及杂种不育性等问题，在前人研究的基础上，研究了不同处理对核果类果树远缘杂交亲和性的效应，并探讨了李、杏属间杂交过程中发生的生理生化变化以及花粉与柱头的互作，建立了李、杏属间远缘杂种的胚培养技术体系，建立了杂种鉴定检测方法，并分析了杂种后代与其父母本之间的遗传变异及规律，最终将一批远缘杂交新种质定植于大田，同时对自然界存在的杏梅种质资源进行了RAPD分析。

Run cost to reduce the whole that supplies chain, reduce " long whip effect " influence, built multistage to supply the Mu Lti-agent model of catenary, use genetic algorithm is forecasted to its demand undertake optimizing study.

为降低供应链的整体运作成本，减小&长鞭效应&的影响，建立了多级供应链的Mu lti-agent模型，并运用遗传算法对其需求预测进行优化研究。

Positive effects of SCA and dominance for tuber yield were significant with CH72.03×11379-03, and 08675-21×10875-04 showed significant negative effect of dominance for chipping color.

极显著的加性效应和较低的狭义遗传率(42.5％)说明基因累加作用对干物质含量的改良极为重要，该性状受微效多基因控制。

Based on the traits and the molecular markers of Sorghum×Sudan grass, the near-isogenic lines (N1Ls) of plant height, leaf number and related molecular markers were determined from the recombinant inbred line F(subscript 6:7) family. The material could be used for the QTLs analysis.

以株高等表型性状和分子标记为基础，从高粱×苏丹草的F(下标 6：7)重组自交系群体中分离株高、叶片数2个性状及对这2个性状有效应的分子标记的近等基因系，为精确定位性状的QTL及分析QTL的作用提供有用的遗传材料。

Finally, regression analysis shows that, isolation by distance exists in rhesus macaques.

最后，遗传距离和地理距离之间的回归分析表明，在恒河猴的群体中存在距离隔离效应。

Along the low altitudinal plateau edge, haplotypes A, B and C tended to be fixed or nearly fixed in different populations, indicating that the species may have survived the last glacial period in different refugia within this area, and the bottlenecks due to the repeated reduction and expansion of the population size resulted in the reduction of biodiversity.

在低海拔的高原边缘，Hap A、Hap B和Hap C高频率固定在不同的居群中，表明可能存在多个不同的避难所，居群反复缩小和扩张的瓶颈效应造成了遗传多样性的丢失。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。