相关实验视频
Updated: Jan 10, 2026

08:57
Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
Published on: August 14, 2018
16.4K
通过等级正统群体重建进化历史
Garance Sarton-Lohéac1, Nikolai Romashchenko2,3, Clément Marie Train2
1Department of Fundamental Microbiology, University of Lausanne, 1015, Lausanne, Switzerland.
Journal of molecular evolution
|November 21, 2025
概括
层次正统组 (HOG) 提供了一种精确,可扩展的方法来分析基因家族和进化史. 这一框架增强了对大规模测序数据的基因关系和物种演变的理解.
科学领域:
- 基因组学就是基因组学.
- 进化生物学 进化生物学
- 生物信息学是一种生物信息学.
背景情况:
- 大规模测序需要有效的方法来推断基因关系.
- 传统的识别orthologs和paralogs的方法在可扩展性和精度上有局限性.
研究的目的:
- 引入层次正统组 (HOG) 作为基因家族分析的强大框架.
- 探索HOG的优势,应用和推断方法.
主要方法:
- 对等级正统团体 (HOG) 的概念审查.
- 讨论HOG建设过程和推断挑战.
- 突出了基因家族表示和进化分析中的应用.
主要成果:
- HOGs提供了一种精确且可扩展的方法来研究基因家族.
- 关键应用包括祖先基因组推断,基因增益/损失跟踪,功能注释和家族遗传分析.
- 在HOG框架结构同源基因更深入的进化见解.
结论:
- HOGs提供了一种结构化的方法来组织同源基因.
- 这一框架对于理解基因家族和物种进化在现代测序计划的背景下至关重要.
相关概念视频
Evolutionary Relationships through Genome Comparisons
6.8K
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...
6.8K
Phylogenetic Trees
49.1K
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.
49.1K
Phylogeny
56.6K
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.
56.6K
What is Evolutionary History?
42.8K
Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
42.8K
Gene Families
9.8K
Gene families consist of groups of genes proposed to have originated from a common ancestor. Typically these arise through events in which a gene or genes are mistakenly duplicated during cell division. Unlike their parent genes (which are subject to selection pressure to maintain function), these gene copies do not need to preserve their sequences and may evolve at a relatively faster rate.
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...
9.8K
Gene Families
3.5K
3.5K

