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関連する概念動画

Limits to Natural Selection01:38

Limits to Natural Selection

Organisms that are well-adapted to their environment are more likely to survive and reproduce. However, natural selection does not lead to perfectly adapted organisms. Several factors constrain natural selection.For one, natural selection can only act upon existing genetic variation. Hypothetically, redtusks may enhance elephant survival by deterring ivory-seeking poachers. However, if there are no gene variants—or alleles—for redtusks, natural selection cannot increase the prevalence of...
The Evidence for Evolution02:55

The Evidence for Evolution

Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.The collection of fossils within sedimentary rocks give a record of common ancestry and often depicts the history of evolution.
Genome Size and the Evolution of New Genes03:21

Genome Size and the Evolution of New Genes

While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
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...
Genome Size and the Evolution of New Genes03:21

Genome Size and the Evolution of New Genes

While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
Evolution of New Traits in Microbes01:24

Evolution of New Traits in Microbes

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...

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Updated: Jun 16, 2026

Automated Gel Size Selection to Improve the Quality of Next-generation Sequencing Libraries Prepared from Environmental Water Samples
13:26

Automated Gel Size Selection to Improve the Quality of Next-generation Sequencing Libraries Prepared from Environmental Water Samples

Published on: April 17, 2015

DNAライブラリを使用して,サイズ制御されたエクシトンの進化を調査する.

Jeffrey Gorman1,2, Sarah Orsborne1, Peter Budden1

  • 1Cavendish Laboratory, Department of Physics, University of Cambridge, Cambridge CB3 0HE, United Kingdom.

Journal of the American Chemical Society
|February 19, 2026
PubMed
まとめ
この要約は機械生成です。

研究者は,複数の光吸収分子 (染色体) を迅速に組み立てるためのDNAベースの方法を開発しました. このDNA制御装置は,新しい電子材料の充電分離と電子デロカライゼーションの効率的なスクリーニングを可能にします.

さらに関連する動画

Design and Synthesis of a Reconfigurable DNA Accordion Rack
07:44

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

Spectroscopic Super-resolution Imaging of DNA Molecules using Intrinsic Contrast
09:19

Spectroscopic Super-resolution Imaging of DNA Molecules using Intrinsic Contrast

Published on: March 6, 2026

関連する実験動画

Last Updated: Jun 16, 2026

Automated Gel Size Selection to Improve the Quality of Next-generation Sequencing Libraries Prepared from Environmental Water Samples
13:26

Automated Gel Size Selection to Improve the Quality of Next-generation Sequencing Libraries Prepared from Environmental Water Samples

Published on: April 17, 2015

Design and Synthesis of a Reconfigurable DNA Accordion Rack
07:44

Design and Synthesis of a Reconfigurable DNA Accordion Rack

Published on: August 15, 2018

Spectroscopic Super-resolution Imaging of DNA Molecules using Intrinsic Contrast
09:19

Spectroscopic Super-resolution Imaging of DNA Molecules using Intrinsic Contrast

Published on: March 6, 2026

科学分野:

  • 分子電子は分子電子である.
  • 超分子化学とは
  • 有機半導体 オーガニック半導体

背景:

  • マルチクロモフォア系を研究するには,伝統的にモデル共性ジメルの合成が必要です.
  • ポルフィリンやペリレン二酸化物 (PDI) のような分子半導体は,有機電子工学にとって極めて重要です.
  • 核酸図書館は,複雑な分子現象の迅速なスクリーニングのためのプラットフォームを提供します.

研究 の 目的:

  • マルチクロモフォア系を作成するためのDNA指向組立方法を開発する.
  • 電荷分離と電子デロカライゼーションの迅速なスクリーニングを可能にする.
  • シーケンスをプログラムしたハイブリッド化により,カスタマイズされた電子特性を作成します.

主な方法:

  • ポルフィリンとペリレン二ミド (PDI) をDNA配列に統合する.
  • ベースシーケンスのプログラムハイブリッド化を使用して,最も近い隣のアセンブリ.
  • 軌道重複とエネルギー交換を予測するために,π-スタッキングのための計算式プレスクリーニング.

主要な成果:

  • DNAを用いて,最大5個のπ結合染色体を成功裏に組み立てました.
  • 組み立てられたシステムで証明された電荷分離と電子デロカライゼーション.
  • 数時間以内にオンデマンドのダイマーおよびマルチマー生産を達成しました.
  • 充電伝送を最適化するための検証済みの計算式プレスクリーニング.

結論:

  • DNA指向アセンブリは,カスタム化されたクロモフォアアーキテクチャのためのモジュールプラットフォームを提供します.
  • この方法により,ステキオメトリック制御と染色体の順序付けが可能になります.
  • 電子アプリケーションのマルチクロモフォアシステムの迅速な開発とスクリーニングを可能にします.