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出现两种不同的类型。Dimorphism The existence of two distinct forms.

雌雄两性的形态在所有发育阶段均不相同。Sexual dimorphism occurs at all stages, including the deposited eggs.

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母鱼另一个性别分辨就是介在眼部到腮盖之间的头部较宽。Another sex dimorphism is that the female has a broad head between eye and gills.

这表明在小麦的活体花药中也存在花粉二型性现象。This indicated that the pollen dimorphism also presented itself in the anthers on wheat plants.

在某些物种中，分泌管道系统的胚胎形成期间会出现雌雄二型性。In several species there is sexual dimorphism in the embryogenesis of the excretory duct system.

解释这两个物种如何适应性别上同种二形性的普遍理论和它演化的原因。Explain how these two species fit into a general theory of sexual dimorphism and why it has evolved.

花粉二型现象与花柱二型现象可能没有直接的关联性，与前人的观点一致。It was consistent with the previous view that pollen dimorphism is not linked with style heterostyly.

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雌雄触角在大小和感器数目上存在明显的性二型现象。A clear sexual dimorphism occurred to both sexes of H. oblita at the size of antennae and sensilla amount.

结果牙弓宽度在多数年龄组、分段中存在显著性别差异。Results The sexual dimorphism of the arch width in most of groups divided by age and position was significant.

结果表明，雌性和雄性日本沼虾触角感受器在种类、形态和分布上均相似。The results showed that there is no sexual dimorphism in the morphology and distribution of the antennular sensilla.

本文还比较了长翅型雌、雄性个体之间间接飞行肌的发育情况。The wing dimorphism differentiation sensitive instar was inferred and compared between the male and female individuals.

是指在同一种植物中存在花柱的二态性，它是通过花柱的不同长度划分的。Heterostyly A dimorphism in which the styles of the same species are of different lengths, thus dividing the species into groups.

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这种现象可能与机体免疫反应和病毒复制水平的性二态性有关。These phenomena could be explained by the sex dimorphism of the immune response of the host and reproduction level of hepatitis B virus.

由于扩增的基因片段长度具有性别多态性，从而为古代人骨和牙齿提供了分子生物学的性别鉴定。Since the amplified sequences exhibit a sex specific length dimorphism they enable a sex identification on a molecular basis for ancient human bone and teeth.

以上结果说明所构建的文库质量较好，可用于后续分析，这为进一步研究褐飞虱翅型分化的分子机理奠定了基础。These results indicated that a high quality library was met the follow analysis, it can provide basic for expounding the molecular mechanism of wing dimorphism.

众多研究表明，面孔的平均化、对称性和性别二态性是影响面孔吸引力的三个主要生物学因素。Multiple researches have indicated that facial averageness, symmetry and sexual dimorphism are three main biological factors that influence facial attractiveness.

测定了似刺鳊鮈成体的两性异形和雌性个体生育力。We measured the sexual dimorphism and female individual fecundity in a population of Paracanthobrama guichenoti, from Oujiang river, Lishui city, Zhejiang province.

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将数值分类用于鸟类分类学研究时，对于雌雄的形态特征差异没有被重视，尤其是对于雌雄同形的鸟类。When numerical methods have been used in avian taxonomy, inter-sexual phenotypic variation has always been neglected, especially in species without obvious sexual dimorphism.

使用贝叶斯网络对长输管道进行了安全失效分析，最后提出了贝叶斯网络对故障树分析的二态性与逻辑确定性的修正。To analyze ineffectiveness of long-distance pipeline transportation with Bayesian network, and conclude the revision of dimorphism and certainty of logic about Bayesian network.

以褐飞虱为研究对象，首次使用保幼激素类似物ZR-515和具有蜕皮激素活性的新型化合物RH-2485表面处理飞虱3龄或4龄若虫，来研究外源激素对飞虱翅型分化的影响。The body surfaces of 3rd or 4th instar larvae of Nilaparvata lugens were treated by ZR-515 and RH-2485 to explore the effects of hormones on wing dimorphism of brown planthopper.