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関連する概念動画

Prokaryotic Cells01:51

Prokaryotic Cells

144.2K
Prokaryotes are small unicellular organisms that include the domains—Archaea and Bacteria. Bacteria include many common organisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize proteins....
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Genomic DNA in Prokaryotes00:46

Genomic DNA in Prokaryotes

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The genome of most prokaryotic organisms consists of double-stranded DNA organized into one circular chromosome in a region of cytoplasm called the nucleoid. The chromosome is tightly wound, or supercoiled, for efficient storage. Prokaryotes also contain other circular pieces of DNA called plasmids. These plasmids are smaller than the chromosome and often carry genes that confer adaptive functions, such as antibiotic resistance.
Genomic Diversity in Bacteria
Although bacterial genomes are much...
51.2K
Genomic DNA in Eukaryotes00:58

Genomic DNA in Eukaryotes

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Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.
54.5K
Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes02:16

Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes

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The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
17.5K
Prokaryotic Cells01:28

Prokaryotic Cells

53.3K
Prokaryotes are small unicellular organisms that include the domains — Archaea and Bacteria. Bacteria include many common microorganisms, such as Salmonella and E. coli, while the Archaea include extremophiles that live in harsh environments, such as volcanic springs.
Like eukaryotic cells, all prokaryotic cells are surrounded by a plasma membrane, have genetic material in the form of single, circular DNA, a cytoplasm that fills the interior of the cell, and ribosomes that synthesize...
53.3K
Evolution of Microbial Genome01:08

Evolution of Microbial Genome

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Microbial genome evolution is a highly dynamic process shaped by continual gene gain and loss across species and strains. This genomic flexibility allows microorganisms to adapt rapidly to environmental pressures and interactions with other organisms. Central to understanding this diversity is the distinction between the core and pan genomes.The core genome comprises the genes shared by all sampled strains of a species, representing essential functions needed for fundamental cellular processes.
56

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関連する実験動画

Updated: Apr 13, 2026

Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing
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Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing

Published on: July 28, 2017

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ゲノムと細胞の複雑さは,シンビオスのシンプルさから生まれる.

Seth R Bordenstein1

  • 1Departments of Biological Sciences and Pathology, Microbiology, and Immunology Vanderbilt University, Nashville, TN 37235, USA.

Cell
|September 13, 2014
PubMed
まとめ
この要約は機械生成です。

生物学者は,安定した動物と微生物のパートナーシップが,新しい遺伝物質を取得することなく,その複雑なネットワークを拡張することを発見しました. これは,生物学における共生関係の複雑で進化する性質を強調しています.

さらに関連する動画

Fluorescence Live-cell Imaging of the Complete Vegetative Cell Cycle of the Slow-growing Social Bacterium Myxococcus xanthus
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Fluorescence Live-cell Imaging of the Complete Vegetative Cell Cycle of the Slow-growing Social Bacterium Myxococcus xanthus

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Cell-cell Fusion of Genome Edited Cell Lines for Perturbation of Cellular Structure and Function
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Cell-cell Fusion of Genome Edited Cell Lines for Perturbation of Cellular Structure and Function

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関連する実験動画

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Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing
12:33

Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing

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Fluorescence Live-cell Imaging of the Complete Vegetative Cell Cycle of the Slow-growing Social Bacterium Myxococcus xanthus
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Fluorescence Live-cell Imaging of the Complete Vegetative Cell Cycle of the Slow-growing Social Bacterium Myxococcus xanthus

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Cell-cell Fusion of Genome Edited Cell Lines for Perturbation of Cellular Structure and Function
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科学分野:

  • シンビオティック・マイクロバイオロジー
  • 動物と微生物の相互作用
  • 進化生物学の進化生物学について

背景:

  • シンビオティックな微生物は,動物の生活に大きな影響を与えます.
  • これらの関係を理解することで,生物学的スケールにおける自然の相互関係が明らかになる.
  • 動物と微生物の相互関係は,生態学的安定にとって極めて重要です.

研究 の 目的:

  • 確立された動物-微生物相互主義におけるゲノム間ネットワークの拡大の背後にあるメカニズムを調査する.
  • ネットワークの複雑性の増大が新しいゲノムを追加することを必要とするかどうかを判断する.

主な方法:

  • 長年にわたる動物-微生物相互性の比較ゲノム分析.
  • 確立された共生関係におけるネットワークダイナミクスの調査.

主要な成果:

  • 安定した,長期的な動物-微生物相互関係は,そのゲノム間ネットワークの増加を示した.
  • このネットワークの拡大は,新しいゲノムが組み込まれることなく起こった.
  • この研究は,共生ネットワークの可塑性を強調しています.

結論:

  • シンビオティックな関係におけるゲノム間ネットワークは,遺伝的増強なしに複雑さを高めることができます.
  • この発見は,相互的なパートナーシップにおける進化戦略の理解を深める.
  • 自然界のネットワーク主義は,様々な生物学的レベルでの適応性を示しています.