species variation

The result showed that there was clear seasonal variation in the bird species diversity.

区系组成呈南北鸟类混杂分布,鸟类的多样性表现出明显季节性.

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Through age-to-age observation and comparison for 8 species of common ladybird larvi in Xinjiang, we found no variation of both number of upright aigrette on chest feet and appearance of basic tooth on claws with the different age of larvi, and easy observation of them.

我们对新疆常见8种瓢虫幼虫逐龄观察比较，发现各龄幼虫胸足的跗冠毛的数量和爪基齿的形状无变异，而且容易观察识别。

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Genetic Variation of Fatty Acid Components in Arachis Species and Development of Interspecific Hybrids with High Oleic and Low Palmitic Acids

野生花生脂肪酸组成的遗传变异及远缘杂交创造高油酸低棕榈酸花生新种质

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Sequence and Copy Number Variation of Oleate Desaturase Gene ( FAD2) in Brassica Species

芸薹属作物油酸脱饱和酶基因（FAD2）拷贝数和序列变异分析

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The achievement on modern biological techniques, such as embryo rescue, somatic hybridization, somatic cell variation and genetic engineering, has been summarized in new germplasm creation of Brassica species.

从胚拯救、体细胞杂交、体细胞无性系变异和基因工程4方面综述了现代生物技术在油菜种质创新中所取得的成绩。

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The characteristics of population variation and species diversity in succession processes of Karst vegetation in Yangshuo in Guangxi have been studied by a spatial series representing temporal series.

采用时空替代法研究广西阳朔岩溶植被在演替过程中的种群变化和物种多样性。

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The genetic diversity of the group mainly consist of brassica napus, kale and brassica carinata and complementarity of allelic variation among different species are studied using SSR primer of C genome.

利用C基因组特异SSR引物对主要由甘蓝型油菜，甘蓝和埃塞俄比亚芥组成的群体的遗传多样性和不同种群间的等位变异进行研究。

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A total sequence of 599 nucleotide base pair was obtained by alignment with homologous sequences of another two Sardinella species in GenBank. There were 445 parsimony-informative sites and 154 variation sites, but no insertion/ deletions were observed.

与GenBank中另外2种小沙丁鱼的同源序列比对，去除部分端部序列后得到599bp同源序列，其中包括445个简约信息位点，154个变异位点，没有发现碱基的插入缺失。

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Meanwhile, the citrus chromosome slides used for FISH and rDNA loci situation on chromosome, genetic variation analysis among the homologous tetraploids and diploids, repeated sequence of chromosome in situ hybridization ( CISH) for chromosome identification and species evolvement were discussed.

对用于荧光原位杂交的柑橘染色体制片方法和rDNA在染色体上的分布位置、同源四倍体和相应二倍体的遗传差异分析、重复序列的染色体原位杂交用于染色体识别和物种演化研究等进行了讨论。

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Recent studies indicate that allele variation in gene expression is a common phenomenon in some species.

等位基因的结构变异及差异表达在多种生物中普遍存在。

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