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関連する概念動画

Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

6.6K
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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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...
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Synteny and Evolution02:31

Synteny and Evolution

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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...
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Phylogeny01:23

Phylogeny

55.9K
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.
55.9K
Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

380
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
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Phylogenetic Trees03:21

Phylogenetic Trees

48.7K
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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Updated: Nov 21, 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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細胞生物学者のための植物力学

T Stadler1,2, O G Pybus3, M P H Stumpf4

  • 1Department of Biosystems Science and Engineering, ETH Zürich, Switzerland. tanja.stadler@bsse.ethz.ch oliver.pybus@zoo.ox.ac.uk mstumpf@unimelb.edu.au.

Science (New York, N.Y.)
|January 15, 2021
PubMed
まとめ
この要約は機械生成です。

細胞の系統と進化を理解するには 系統遺伝学と系統力学的なアプローチが必要です "ツリー思考"と生態系ゼロモデルを適用することで,生物学的洞察のための単細胞データの分析が強化されます.

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Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins
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Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins

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A Practical Guide to Phylogenetics for Nonexperts
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関連する実験動画

Last Updated: Nov 21, 2025

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08:57

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Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins
09:40

Phage Phenomics: Physiological Approaches to Characterize Novel Viral Proteins

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A Practical Guide to Phylogenetics for Nonexperts
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科学分野:

  • 進化生物学
  • 細胞生物学
  • システム生物学

背景:

  • 多細胞生物は,細胞の誕生,死,遺伝によって引き起こされる複雑な細胞動態を示します.
  • これらのダイナミクスは 発育や分化 そして癌のような病気の出現に 根本的な役割を果たします
  • 最近の分子生物学の進歩により,細胞の構成,祖先,進化の単細胞解像度の研究が可能になりました.

研究 の 目的:

  • 単細胞生物学的データを分析するための系統遺伝学および系統動力学的アプローチを導入する.
  • 細胞レベルのデータを解釈する際に"ツリー思考"の重要性を強調する.
  • 単細胞の研究における統計的仮説テストにおける生態学的ゼロモデルの有用性を実証する.

主な方法:

  • 単細胞データに適用された 系統遺伝学および系統動力学分析
  • データ解釈のための"ツリー思考"の概念的枠組みです.
  • 統計的仮説テストのための生態学的ゼロモデル.

主要な成果:

  • 系統遺伝学と系統動力学は 細胞の系統と進化を理解するための強力なツールを提供します
  • "ツリー思考"は 複雑な単細胞データセットの解釈に 重要なレンズを提供します
  • 細胞生物学における統計的推論の厳格性を改善する.

結論:

  • 系統遺伝学と系統動力学的アプローチを単細胞生物学と統合することが不可欠です.
  • 単細胞データを完全に活用するには"ツリー思考"やゼロモデルを含む理論的発展が必要である.
  • 実験的な細胞生物学における進歩は 細胞動力学のより深い洞察のための理論的枠組みによって補完されなければならない.