相关实验视频
Updated: Sep 12, 2025

08:57
Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
Published on: August 14, 2018
16.0K
ERC2.0进化速率共变更新改进了对大型族系的功能相互作用的推断
Jordan H Little1, Guillermo Hoffmann Meyer2, Aakash Grover2
1Department of Human Genetics, University of Utah, Salt Lake City, Utah 84112, USA.
Genome research
|August 7, 2025
概括
进化速率共变2.0 (ERC2.0) 通过分析大型数据集来增强基因功能预测. 这种改进的方法为识别具有共同进化模式和功能的基因组提供了更大的统计能力.
科学领域:
- 进行比较的基因组学.
- 生物信息学是一种生物信息学.
- 进化生物学是进化的生物学.
背景情况:
- 进化速率共变 (ERC) 识别了具有共同进化模式的基因组,表明它们具有共同的功能.
- 以前的ERC方法与大规模的比较基因组学数据集作斗争.
- 有限的预测能力阻碍了ERC的更广泛的应用.
研究的目的:
- 介绍ERC2.0,这是研究ERC的增强方法.
- 提高ERC的算法速度,统计能力和预测准确度.
- 让ERC能够对数百种物种和数以万计的基因进行跨族系的分析.
主要方法:
- 开发了ERC2.0并改进了算法速度.
- 实现了对异构二次性和相关性费舍尔变换的规范化.
- 将ERC2.0应用于酵母和哺乳动物比较基因组学数据集.
主要成果:
- 与ERC1.0.0相比,ERC2.0显示出显著提高的统计能力和预测准确性.
- 较大的族系进一步增强ERC2.0的预测能力.
- ERC2.0准确地预测了非模型生物中的已知基因注释和功能.
结论:
- ERC2.0是一个强大的计算工具,用于候选基因查和功能预测.
- 改进的方法克服了ERC以前方法的局限性.
- ERC2.0为功能基因组学提供了大规模的进化分析.
相关概念视频
Evolutionary Relationships through Genome Comparisons
6.2K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
6.2K
Speciation Rates
21.4K
Overview
21.4K
Gene Evolution - Fast or Slow?
7.4K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.4K
Convergent Evolution
29.0K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
29.0K
Phylogeny
47.3K
Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
47.3K
Synteny and Evolution
3.4K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.4K

