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相关概念视频

Evolutionary Relationships through Genome Comparisons02:54

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...
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Genome Annotation and Assembly03:36

Genome Annotation and Assembly

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The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
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Phylogenetic Trees03:21

Phylogenetic Trees

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Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
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Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

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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...
7.4K
Phylogeny01:23

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.
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The Tree of Life - Bacteria, Archaea, Eukaryotes02:40

The Tree of Life - Bacteria, Archaea, Eukaryotes

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The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
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相关实验视频

Updated: Sep 12, 2025

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

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基因组:从注释的基因组中推断出基因组的推断.

Cheng-Hung Tsai1,2, Jason E Stajich1,3

  • 1Department of Microbiology & Plant Pathology, University of California-Riverside, Riverside, CA 92521, United States.

bioRxiv : the preprint server for biology
|August 6, 2025
PubMed
概括
此摘要是机器生成的。

基因组是从基因组数据中构建物种类型的新工具. 它比其他方法更快,更准确,为大规模的基因组重建提供了用户友好的体验.

关键词:
隐藏的马尔科夫模型在这里,Python是Python.脊椎病学 脊椎病学是一门专业的专业.人类遗传学 遗传学人类基因组学是什么?软件 软件 软件 软件 软件

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Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
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Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

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A Practical Guide to Phylogenetics for Nonexperts
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相关实验视频

Last Updated: Sep 12, 2025

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

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Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations

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科学领域:

  • 基因组学就是基因组学.
  • 生物信息学是一种生物信息学.
  • 进化生物学 进化生物学

背景情况:

  • 遗传学重建对于理解进化关系至关重要.
  • 对于大型数据集而言,现有的方法可能是计算密集和缓慢的.

研究的目的:

  • 介绍Phyling,这是一个用于快速和可扩展的家族基因组重建的新工具.
  • 提供一种用户友好的解决方案,直接从基因组数据中推断物种类型.

主要方法:

  • 从BUSCO数据库中使用隐藏的马尔科夫模型 (HMMs) 来识别基因.
  • 它支持物种树结构的共识和连接策略.
  • 该工具优化了内存使用和数据处理,以提高效率.

主要成果:

  • 与OrthoFinder相比,Phyling表现出明显更快的性能.
  • 它在遗传学重建中达到同等或更高的准确性.
  • 检查点系统允许增量分析,节省计算资源.

结论:

  • 基因组为基因组重建提供了一种高效,准确和可扩展的解决方案.
  • 它的用户友好设计和检查点等功能使它适合进行大规模的进化研究.
  • 该工具支持蛋白质和核酸数据,用于多用途的遗传学分析.