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

Convergent Evolution01:54

Convergent Evolution

27.6K
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.
27.6K
Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

6.2K
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...
6.2K
Overview of Transposition and Recombination02:13

Overview of Transposition and Recombination

16.3K
Transposons make up a significant part of genomes of various organisms. Therefore, it is believed that transposition played a major evolutionary role in speciation by changing genome sizes and modifying gene expression patterns. For example, in bacteria, transposition can lead to conferring antibiotic resistance. Movement of transposable elements within the genetic pool of pathogenic bacteria can aid in transfer of antibiotic-resistant genetic elements. In eukaryotes, transposons can carry out...
16.3K
Eukaryotic Evolution01:24

Eukaryotic Evolution

19.5K
The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
19.5K
Evolutionary Processes in Microbes01:26

Evolutionary Processes in Microbes

202
Microbial evolution occurs rapidly due to short generation times and a variety of genetic processes, including horizontal gene transfer, mutation, recombination, and genetic drift. These mechanisms collectively enable microbes to adapt swiftly to changing environments.Horizontal gene transfer (HGT) allows genes to move between different species and occurs through three main mechanisms: conjugation, transformation, and transduction. Conjugation involves direct cell-to-cell contact for DNA...
202
Evolution of New Traits in Microbes01:24

Evolution of New Traits in Microbes

199
Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
199

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

Remote homology and functional genetics unmask deeply preserved Scm3/HJURP orthologs in metazoans.

Science advances·2026
Same author

A conserved in-frame stop codon acts as a multipotent defense mechanism in alphaviruses.

Science advances·2026
Same author

KAS-CUT&Tag for direct mapping of transcription bubbles.

bioRxiv : the preprint server for biology·2026
Same author

Coronavirus protein interaction mapping in bat and human cells reveals network rewiring governing immune evasion and zoonotic potential.

Cell host & microbe·2026
Same author

Systematic discovery of pro- and anti-HIV host factors in primary human CD4+ T cells.

Cell·2026
Same author

Remote homology and functional genetics unmask deeply preserved Scm3/HJURP orthologs in metazoans.

bioRxiv : the preprint server for biology·2026
Same journal

Co-option of lysosomal machinery shapes the evolution of the intracellular photosymbiosis supporting coral reefs.

Cell·2026
Same journal

LEF1 and niche factors determine T cell stemness across chronic diseases.

Cell·2026
Same journal

Recurrent patterns of TOP1-mediated neuronal genomic damage shared by major neurodegenerative disorders.

Cell·2026
Same journal

Four-dimensional molecular mapping from a spatial snapshot reveals the dynamics of hair follicle organogenesis.

Cell·2026
Same journal

Whole-cell particle-based digital twin simulations from 4D lattice light-sheet microscopy data.

Cell·2026
Same journal

Systematic discovery of pathogen effector functions across human pathogens and pathways.

Cell·2026
関連記事をすべて見る

関連する実験動画

Updated: May 2, 2026

Migratory Behavior of Cells Generated in Ganglionic Eminence Cultures
06:34

Migratory Behavior of Cells Generated in Ganglionic Eminence Cultures

Published on: April 21, 2011

12.8K

セントロメア複雑性における主要な進化的移行

Harmit S Malik1, Steven Henikoff

  • 1Division of Basic Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA. hsmalik@fhcrc.org

Cell
|September 22, 2009
PubMed
まとめ
この要約は機械生成です。

染色体分離に不可欠なセントロメアは,複雑さによって大きく異なっています. この研究は,祖先の表遺伝性セントロメアが,メオティック・ドライブのせいで,単純な点セントロメアと複雑な配列に進化したことを示唆している.

さらに関連する動画

Ex Utero Electroporation and Organotypic Slice Cultures of Embryonic Mouse Brains for Live-Imaging of Migrating GABAergic Interneurons
09:50

Ex Utero Electroporation and Organotypic Slice Cultures of Embryonic Mouse Brains for Live-Imaging of Migrating GABAergic Interneurons

Published on: April 20, 2018

9.7K
Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

1.2K

関連する実験動画

Last Updated: May 2, 2026

Migratory Behavior of Cells Generated in Ganglionic Eminence Cultures
06:34

Migratory Behavior of Cells Generated in Ganglionic Eminence Cultures

Published on: April 21, 2011

12.8K
Ex Utero Electroporation and Organotypic Slice Cultures of Embryonic Mouse Brains for Live-Imaging of Migrating GABAergic Interneurons
09:50

Ex Utero Electroporation and Organotypic Slice Cultures of Embryonic Mouse Brains for Live-Imaging of Migrating GABAergic Interneurons

Published on: April 20, 2018

9.7K
Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

1.2K

科学分野:

  • 遺伝学 遺伝学とは
  • 進化生物学の進化生物学について
  • 分子生物学は分子生物学である.

背景:

  • セントロメアは,細胞分裂中の正確な染色体分離に不可欠です.
  • セントロメア構造は,単純な点セントロメアから大規模な衛星DNA配列まで,驚くべき多様性を表しています.
  • セントロメア複合体の進化的起源と多様化は,未だに十分に理解されていない.

研究 の 目的:

  • セントロメア複合性の進化について統一的仮説を提唱する.
  • エピジェネティックに定義された祖先のセントロメアから多様な現代の形態への移行を説明するために.
  • セントロメア進化をメオティック・ドライブと性的な対立と結びつけるため.

主な方法:

  • 比較ゲノミクス分析. 比較ゲノミクス分析.
  • セントロメア関連タンパク質の系統遺伝的再構築.
  • エピジェネティック継承とメオティックドライブの理論的モデリング.

主要な成果:

  • 祖先のセントロメアは,表遺伝学的に定義されることが提案されています.
  • 単純な点セントロメアは,利己的な遺伝的要素から生まれたのかもしれない.
  • 植物や動物の複雑なセントロメアは,メオティック・ドライブの強い選択的圧力の下で進化した可能性が高い.

結論:

  • セントロメア進化は,表遺伝的調節と利己的な遺伝的要素の両方によって形成されています.
  • メイオティック・ドライブ,特にメイオシスにおけるメイオシスは,セントロメア進化と多様化のための強力な選択力を提供します.
  • セントロメア複合性を理解するには,構造的動態と進化的動態の両方を考慮する必要があります.