Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Phylogenetic Trees03:21

Phylogenetic Trees

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.
Phylogenetic Trees03:21

Phylogenetic Trees

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.
Phylogeny01:23

Phylogeny

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.
Microbial Phylogeny01:28

Microbial Phylogeny

Understanding the evolutionary relationships among microorganisms is fundamental to microbial ecology and taxonomy. Phylogenetic trees are essential tools for inferring these relationships, relying primarily on comparative analyses of molecular sequences such as DNA, RNA, or proteins. In microbial studies, these trees typically depict the evolutionary paths of diverse bacterial and archaeal species by mapping genetic differences accumulated over time.Phylogenetic trees are composed of tips,...
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

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...
Phylogenetic Species Concept in Microbiology01:22

Phylogenetic Species Concept in Microbiology

The phylogenetic species concept (PSC) is a framework used to delineate species based on evolutionary relationships, emphasizing shared ancestry and diagnosable genetic traits. Unlike morphological or biological species concepts, the PSC is particularly advantageous for microbial taxonomy, where traditional reproductive or phenotypic criteria often fall short due to the prevalence of asexual reproduction, minimal morphological differentiation, and widespread horizontal gene transfer among...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Counting Rankings of Tree-Child Networks.

Bulletin of mathematical biology·2026
Same author

Predicting the depth of the most recent common ancestor of a random sample of k species: the impact of phylogenetic tree shape.

Journal of mathematical biology·2026
Same author

A Dichotomy Law for Certain Classes of Phylogenetic Networks.

Bulletin of mathematical biology·2025
Same author

The Asymptotic Distribution of the <i>k</i>-Robinson-Foulds Dissimilarity Measure on Labeled Trees.

Journal of computational biology : a journal of computational molecular cell biology·2025
Same author

Surprising effects of differential loss in genome evolution: the last-one-out.

FEMS microbiology letters·2025
Same author

Asymptotic Enumeration of Normal and Hybridization Networks via Tree Decoration.

Bulletin of mathematical biology·2025

関連する実験動画

Updated: May 31, 2026

A Practical Guide to Phylogenetics for Nonexperts
12:00

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

系統樹の空間にあるテラス.

Michael J Sanderson1, Michelle M McMahon, Mike Steel

  • 1Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721, USA. sanderm@email.arizona.edu

Science (New York, N.Y.)
|June 18, 2011
PubMed
まとめ

研究者らは,進化の樹を再建する過程で新しい構造を発見し,似たような樹の"テラス"を明らかにした. これらの発見は,系統学的曖昧さを解消し,配列データを用いた進化分析を改善するのに役立ちます.

科学分野:

  • コンピュータ生物学 コンピュータ生物学
  • 進化生物学の進化生物学について
  • バイオインフォマティックス

背景:

  • 種に富んだ系統遺伝子の構築は,生命の樹を理解するために極めて重要です.
  • マルチロカス配列のデータセットは,しばしば不完全であり,正確な系統遺伝的再構築に課題をもたらす.

研究 の 目的:

  • 樹木再建のソリューションランドスケープで以前未知の構造を記述する.
  • 特定された構造の内部の系統遺伝的曖昧さを特徴づけ,改善するための方法を開発する.

主な方法:

  • 樹木再建問題の解決策景観の分析.
  • 最大合意サブツリーを特定するためのアルゴリズムの開発.
  • 新しいシーケンシングターゲットの最小セットを選択するための方法.

主要な成果:

  • 同一品質の樹木の"テラス"を発見し,系統遺伝学的に似た樹木の島に配置した.
  • テラス内の系統遺伝的曖昧さの効率的な特徴付け.
  • 最大合意サブツリーまたはターゲッテッドシーケンシングを通じて曖昧さを改善するためのアルゴリズム.

結論:

さらに関連する動画

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

The ITS2 Database
16:17

The ITS2 Database

Published on: March 12, 2012

関連する実験動画

Last Updated: May 31, 2026

A Practical Guide to Phylogenetics for Nonexperts
12:00

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

The ITS2 Database
16:17

The ITS2 Database

Published on: March 12, 2012

  • 系統遺伝的曖昧さは,特定されたソリューションの景色をナビゲートすることによって理解し,管理することができます.
  • 新しいアルゴリズムは,系統樹の再建の正確性と効率を向上させることができます.
  • 将来の樹木発見アルゴリズムは,木の空間における大きなテラスを考慮する必要があります.