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Convergent Evolution01:54

Convergent Evolution

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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.
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The Evidence for Evolution02:55

The Evidence for Evolution

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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.
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Speciation Rates01:07

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Overview
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Phylogeny01:23

Phylogeny

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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.
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Synteny and Evolution02:31

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Scientists record evolutionary history by analyzing fossil, morphological, and genetic data. The fossil record documents the history of life on Earth and provides evidence for evolution. However, both fossil and living organisms offer evidence that outlines Earth’s evolutionary history.
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Updated: Jul 2, 2025

Chemical Isolation, Quantification, and Separation of Skin Lipids from Reptiles
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蛇のマクロ進化の特異性

Pascal O Title1,2,3, Sonal Singhal3,4, Michael C Grundler3

  • 1Department of Ecology and Evolution, Stony Brook University, Stony Brook, NY 11794, USA.

Science (New York, N.Y.)
|February 22, 2024
PubMed
まとめ
この要約は機械生成です。

蛇やトカゲは 進化の過程で 驚くべき適応を遂げています 特にヘビの多様化は 特殊な捕食戦略によって 生態系を変えており 脊椎動物の生物多様性にも影響を及ぼしています

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Using Enclosed Y-Mazes to Assess Chemosensory Behavior in Reptiles
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Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
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Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks

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関連する実験動画

Last Updated: Jul 2, 2025

Chemical Isolation, Quantification, and Separation of Skin Lipids from Reptiles
07:55

Chemical Isolation, Quantification, and Separation of Skin Lipids from Reptiles

Published on: February 7, 2019

11.0K
Using Enclosed Y-Mazes to Assess Chemosensory Behavior in Reptiles
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Using Enclosed Y-Mazes to Assess Chemosensory Behavior in Reptiles

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Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
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Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks

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科学分野:

  • 進化生物学
  • 動物学
  • エコロジー

背景:

  • スクアマタ (ヘビやトカゲ) は陸上の脊椎動物の大部分を占める.
  • 移動,栄養,感覚のシステムに 多様なイノベーションを 披露しています
  • 放射線の背後にある 進化の原動力は 十分に理解されていません

研究 の 目的:

  • スクワメットのマクロ進化の 原因と結果を調査する
  • 蛇やトカゲの進化の歴史と多様化パターンを理解するために

主な方法:

  • 6万以上の動物を個別的に観察した
  • 1018種 (5400ロシ) のゲノムデータを用いてタイム・キャリブレーテッド・フィロゲニスを構築した.

主要な成果:

  • 蛇の種化と表型進化の動態の変化を特定した.
  • 蛇の特殊な捕食戦略の 繰り返しの起源と多様化が示されています
  • 蛇が動物社会における 食物連鎖構造をどのように変えたかを示しました

結論:

  • 史的な偶然と 初期のヘビの進化によって 形成されています
  • 蛇の進化は脊椎動物の生物多様性に大きな影響を与えました