搜索结果: 1-15 共查到“基因工程 Evolution”相关记录19条 . 查询时间(0.334 秒)
近期，动物科技学院姜雨教授团队在鸡泛基因组领域取得重要突破，研究论文“De novo assembly of 20 chicken genomes reveals the undetectable phenomenon for thousands of core genes on micro-chromosomes and sub-telomeric regions ”在Molecular Bio...
Despite the sheer number of genes that each human cell contains, these so-called “coding” DNA sequences comprise just 1 percent of our entire genome. The remaining 99 percent is made up of “non-coding...
系统鉴定和分析了棉花SUN家族蛋白，通过病毒诱导的敲除和CRISPR/cas9介导的GbSUN5敲除，发现尽管花粉活力仍然正常，但是其败育率较高。本研究结果表明：SUN3和SUN5在生物学功能上存在差异，在生殖发育中发挥重要作用。
浙江大学生命科学研究院周琦实验室在Molecular Biology and Evolution报道新基因在其生命周期中调控方式的动态演化史（图）
浙江大学生命科学研究院 周琦 实验室 新基因 生命周期 动态演化史
2018/11/12
2018年11月3日，浙江大学生命科学研究院周琦团队在Molecular Biology and Evolution杂志在线发表题为“On the regulatory evolution of new genes throughout their life history“的文章，刻画了演化过程中物种特有的新基因是如何通过不同种类和程度的组蛋白修饰和获取新的调控序列，以逐步由组织特异性的年轻基因...
Reconstruction of Ancient Chromosomes Offers Insight Into Mammalian Evolution（图）
Reconstruction Ancient Chromosomes Insight Into Mammalian Evolution
2017/7/24
What if researchers could go back in time 105 million years and accurately sequence the chromosomes of the first placental mammal? What would it reveal about evolution and modern mammals, including hu...
“Smart” Cephalopods Trade Off Genome Evolution for Prolific RNA Editing
Smart Cephalopods Trade Off Genome Evolution Prolific RNA Editing
2017/4/27
Octopus, squid, and cuttlefish are famous for engaging in complex behavior, from unlocking an aquarium tank and escaping to instantaneous skin camouflage to hide from predators. A new study suggests t...
Scientists engineer animals with ancient genes to test causes of evolution（图）
Scientists engineer animals ancient genes test causes of evolution
2017/2/16
Scientists at the University of Chicago have created the first genetically modified animals containing reconstructed ancient genes, which they used to test the evolutionary effects of genetic changes ...
Molecular Evolution of a Portion of the Mitochondrial 16S Ribosomal Gene Region in Scleractinian Corals
Gene Region Scleractinian Corals
2015/12/17
Relationships among families and suborders
of scleractinian corals are poorly understood because of
difficulties 1) in making inferences about the evolution
of the morphological characters used in ...
Toll Evolution: A Perspective from Regulatory Regions
regulatory regions antibacterial innate immunity toll-related proteins
2015/5/27
Background: Toll and Toll-related proteins play an important role in antibacterial innate immunity and are widespread in insects, plants, and mammals. The completion of new genomes such as Anopheles g...
A gene that shaped the evolution of Darwin's finches（图）
A gene that shaped the evolution Darwin's finches
2015/3/4
Researchers from Princeton University and Uppsala University in Sweden have identified a gene in the Galápagos finches studied by English naturalist Charles Darwin that influences beak shape and that ...
Phylogenics and Patterns of Molecular Evolution in Amoebozoa
Amoebozoa Arcellinida evolution of sex gene duplications systematics Tubulinea
2014/12/18
My dissertation explores several aspects of the relationship between morphological and molecular evolution in amoeboid lineages:Chapter 1 - General Introduction: This chapter provides an overview of t...
With more than 2.25 billion cups consumed daily worldwide, coffee is the principal agricultural product of many tropical countries. According to estimates by the International Coffee Organization, mor...
Twenty billion pieces of DNA in 100 small fish have opened the eyes of biologists studying evolution. After combining new technologies, researchers now know many of the genomic regions that allowed an...
摘要微卫星序列广泛存在于各类真核生物基因组中，一般为散在分布的中等程度重复序列。不同物种中，微卫星序列的含量以及占优势的微卫星序列类型各不相同。复制时,微卫星序列易于发生长度突变，这种突变与微卫星序列的复制滑移有关，同时也受多种因素的影响。微卫星序列可能是原微卫星序列通过复制滑移使序列长度扩增形成的。进化过程中，微卫星序列的长度变化维持在一定的范围内。由于微卫星标记多态性高、重复性好，并且操作简单...
摘要
通过PCR克隆的方法，获得了分别来自二倍体长穗偃麦草的E基因组和四倍体长穗偃麦草的E1基因组的4个高分子量麦谷蛋白亚基（HMW-GS）基因启动子的部分序列。序列分析表明，它们之间的同源性较高，两个x型亚基启动子序列之间只有1个碱基的差异，而两个y型亚基启动子序列完全相同, x和y型亚基启动子序列之间的长度和部分碱基位点都有差异。推测四倍体长穗偃麦草中的E1基因组可能起源于二倍体的E基因组。...