- 更多网络例句与杂种繁殖相关的网络例句 [注：此内容来源于网络，仅供参考]
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But harmful effects are more common in groups with a history of interbreeding over several generations.
但是在历史上经历数代杂种繁殖的群体发生有害变化是较普遍的。
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On the basis of DDRT-PCR technique we found that:Total of 331 differential displayed cDNA bands from 1161 were displayed in the 4x4 diallel cross combinations with 30 pairs of primers, which shows the differences of gene expression between hybrids and their parental lines were very obvious in quantity and quality.
采用mRNA差异显示技术和荧光定量反转录PCR技术，从随机mRNA差异显示和候选功能基因mRNA表达定量分析两个方面，研究了32周龄杂种鸡及其亲本纯种的基因差异表达及其与繁殖性状杂种优势的关系，探讨了鸡繁殖性状杂种优势形成的因素及其分子遗传机理。
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This course systematically describes the structure and function, transmission, expression and regulation, and evolution of genetic materials, covering basis of cytology for inheritance, molecular basis of genetic materials, Mendel's principles of inheritance, linkage and sex linkage, genemutation, variations in chromosome structure and number, quantitative genetics, inbreeding and heterosis, inheritance of bacteria and viruses, extranuclear inheritance, gene engineering, genomics, gene expression and regulation, developmental genetics, population genetics and evolution.
本课程全面系统地介绍遗传物质的结构与功能、遗传物质的传递、遗传物质的表达与调控、遗传物质的进化等，包括遗传的细胞学基础、遗传物质的分子基础、孟德尔遗传、连锁遗传和性连锁、基因突变、染色体结构变异、染色体数目变异、数量性状的遗传、近亲繁殖和杂种优势、细菌和病毒的遗传、细胞质遗传、基因工程、基因组学、基因表达的调控、遗传与发育、群体遗传与进化。
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In this paper, Platycodon grandiflorum was studied to explore the method and technology of using heterosis in sexual reproduction medicinal plant, which is to la.
本论文以我国重要中药材桔梗为对象，探索有性繁殖药用植物杂种优势利用需要解决的关键基础问题，为培育药材专用或药食兼用的优良桔梗杂交品种奠定基础。
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Mayr also introduced the biological species concept that defined a species as a group of interbreeding or potentially interbreeding populations that were reproductively isolated from all other populations.
迈尔还提出了生物学的物种概念，定义物种为一个杂种繁殖的群体（或潜在地杂种繁殖的群体），与所有其它的种群在生殖上隔离。
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Individuals crossing exclusively within the same population produce more progeny than those crossing in both directions and thereby use up some of their gametes for the production of inviable hybrids.
完全在同一种群内进行杂交的个体比以两个方向进行杂交的个体繁殖后代要多，因此为了产生无生机的杂种，就要消耗掉一些配子。
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In the experiment ,a study on the polymorphisms of the 62bp of Prepro-orexin gene in ten breeds including Erhualian, Large White and Landrance × Large White × Erhualian crossbreeds was performed by mean of PCR-SSCP and PCR-RFLP.The litter size and growth performance between different genotype of some breeds were analysized.
本实验用PCR-SSCP和PCR-RFLP两种方法在二花脸、大约克及长·杂种猪等十个猪群内进行了Prepro-orexin基因第62bp位点处的多态性的检测，并且分析各基因型与繁殖性状、生长性状之间的相关性。
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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.
通过关于笼饲环境下交配行为、受精率、胚胎发育、种蛋孵化率的种群间杂交试验证明：由于体量、形态、习性、繁殖季节性的差异，我国境内的野生日本鸣鹑与家鹑群体之间的杂交能育性低于同种群交配水平，但可以实现正、反杂交，产生受精卵、孵出杂种一代，不存在合子前生殖隔离；在正反杂交组合中，以野雄鹑X小型雌家鹑的效果最好。
- 更多网络解释与杂种繁殖相关的网络解释 [注：此内容来源于网络，仅供参考]
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capital construction statistics：基本建设统计
hybridist [生]杂种繁殖者,杂交工作者 | capital construction statistics 基本建设统计 | spy glass 望远镜
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crossbred：杂种
cross fertilisation 异体受精 | crossbred 杂种 | crossbreeding 杂交育种,杂交繁殖
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crossbreeding：杂交育种,杂交繁殖
crossbred 杂种 | crossbreeding 杂交育种,杂交繁殖 | crossing over 互换,交换
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cultivar：(栽培)品种
在七十五年来,由这二十种野 "种"又产生了超过三十种的"栽培品种"(Cultivar),即人工培养出来的品种. 各野种之间是可以随便交配的,一种Saintpaulia与另一种配种,是轻而易举之事,甚至一些业余研究杂种繁殖的人,也可以把家中所种的两三种品种互相交配.
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hybridism：杂种
hybrid 杂种 | hybridism 杂种 | hybridist 杂种繁殖者
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hybridist：[生]杂种繁殖者,杂交工作者
terminal files 终端仿真文件 | hybridist [生]杂种繁殖者,杂交工作者 | capital construction statistics 基本建设统计
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hybridist：杂种繁殖者
hybridism 杂种 | hybridist 杂种繁殖者 | hybridity 杂种性
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interbreed：使杂种繁殖
interbranch 分行往来 | interbreed 使杂种繁殖 | interbreed 混种
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interbreeding：杂种繁殖
我们也应用这个研究成果来讨论同域物种形成(sympatric生物多形现象(Biological polymorphism)是指在某一物种(species)杂种繁殖(interbreeding)的群体(population),并存两种或两种以上不同的型态(morph,表现型),
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intercalary growth：节间生长
interbreeding 杂种繁殖 | intercalary growth 节间生长 | intercalated bed 夹层