The function of population isolation is stated by the analyzing the domain of attraction of local optimum.

通過對(duì)局部最優(yōu)吸引域的分析，說明了種群隔離的作用亚欧美黄色网。

The paper summarizes the recent progress in microsatellites isolation and their applications in population study, parentage analysis, and detection of changes in genetic variation of farmed stocks, and reviews the problems of microsatellite markers including null alleles and size homoplasy.

本文對(duì)皺紋盤鮑的微衛(wèi)星標(biāo)記的開發(fā)以及在種群遺傳多樣性評(píng)價(jià)、家系分析、人工苗種遺傳變異監(jiān)測(cè)研究方面的最新進(jìn)展進(jìn)行了綜述综合色久一本毛片，并闡述了微衛(wèi)星標(biāo)記在無效等位基因、大小承異同形性等方面存在的問題国产精品18久久久久久不卡。

So the preparation of a pure culture involves the isolation of a given microorganism from a mixed natural microbial population.

因此純培養(yǎng)制備要從混合的天然微生物群中分離出特定的微生物www、/789黄片。

Adding to the difficulty is the fact that some of the main theoretical concepts and the underlying structural conditions of rural America—including definitions of rurality, the structure of rural economies, population characteristics, and the reality of rural isolation and distances— have been altered repeatedly throughout the 20th century.

難上加難的是，許多重要的理論概念和潛在的農(nóng)村結(jié)構(gòu)性狀況——包括農(nóng)村的定義在线无码不卡网、農(nóng)村的經(jīng)濟(jì)結(jié)構(gòu)超级碰人人操、人口特點(diǎn)和農(nóng)村的孤立與偏遠(yuǎn)的事實(shí)——在整個(gè)20世紀(jì)處于不停的變化之中。

Bidens pilosa var. radiata, one of the rapid expanding invasive weeds, has become prevailing throughout Taiwan. A study on the result enhanced by the breakdown of geographic isolation with the native varieties in genetic variation, population structure and introgressive hybrization is really in need. In this study the genetic variation and population structure among the varieties of Bidens pilosa complex were studied using ISSR markers.

在臺(tái)灣Bidens pilosa種群在外部形態(tài)及分布上均非常類似www.huangse.con，加上大花咸豐草又屬極具侵略性的新歸化種日韩一级AV黄色片，在與其他自生變種又無明顯隔離下，是否增加種間之交流與漸滲雜交之機(jī)會(huì)及對(duì)族群結(jié)構(gòu)的影響看一级二级黄色网站，實(shí)有深入探討之必要巨胸喷奶水视频www网站麻豆。

Ochotona thibetana; skull; mountains; geographical isolation; population subdivision

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Endemic Describing a population or species that is restricted geographically. Some endemics have evolved in geographical isolation on islands or mountain tops; others may be relics of once widespread species that have become restricted owing to climate change, geological change, or human activity.

特有種：用來描述一個(gè)地理上限定的種群或種黄黄网站在线观看，一些特有種與島嶼或山頂這種地理上的孤立有關(guān)；還有一些可能是曾經(jīng)廣為分布的某一個(gè)種由于氣候變化geexxxxx、地理變化或人類活動(dòng)的影響而遺留下來的日本一一video。

To detect potential influence from geographical isolation upon population differentiation in small mammals, the skulls of Tibetan pikas among three isolated populations in western Sichuan Province were systematically compared.

為探討地理隔離對(duì)小型獸類種群分化的影響，本文系統(tǒng)比較了四川西部3個(gè)隔離藏鼠兔Ochotona thibetana種群在頭骨形態(tài)上的異同欧美性爱激情777。

Results of interpopulation crossing test of mating, fertilization rate, embryo growth and hatchability under the condition of cage feeding indicated that:(1) due to difference in body size, morphology, habits and characteristics and reproducing season, crossing fertility between wild Japanese quail in China and domestic quail population was lower than that of intrapopulation mating, but fertilized egg through reciprocal crossing could be incubated and produced F1 without prezygotic isolation;(2) crossing of wild male quail ?female small-type domestic quail produced the best effect among all combinations of reciprocal crossings.

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