Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Speciation Rates01:07

Speciation Rates

21.2K
Overview
21.2K
Genetic Drift03:33

Genetic Drift

39.7K
Natural selection—probably the most well-known evolutionary mechanism—increases the prevalence of traits that enhance survival and reproduction. However, evolution does not merely propagate favorable traits, nor does it always benefit populations.
39.7K
The Evidence for Evolution02:55

The Evidence for Evolution

42.6K
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.
42.6K
Gene Flow02:39

Gene Flow

35.0K
Gene flow is the transfer of genes among populations, resulting from either the dispersal of gametes or from the migration of individuals.
35.0K
Genetics of Speciation02:16

Genetics of Speciation

19.2K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.2K
Limits to Natural Selection01:38

Limits to Natural Selection

31.2K
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.
31.2K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Multiple Cortical Hypointense Lesions Revealed by T2*-Weighted Imaging and Micro-aneurysmal Lesions in a Case of Cardiac Myxoma.

Cureus·2026
Same author

[Alemtuzumab-based HLA-haploidentical transplantation for relapsed/refractory aggressive NK-cell leukemia].

[Rinsho ketsueki] The Japanese journal of clinical hematology·2026
Same author

Comparison of serum paraoxonase 1, butyrylcholinesterase, and carboxylesterase activities among dogs, cats, micro-mini pigs, and goats.

The Journal of veterinary medical science·2026
Same author

Molecular Orientation and Mechanical Properties of Biomass-Derived Aliphatic Polyamide (PA11) by High-Pressure Compression Molding.

Materials (Basel, Switzerland)·2026
Same author

High tensile strength and transformation-induced plasticity in bulk polycrystalline omega titanium.

Scientific reports·2026
Same author

Synthesis of High-Performance and Biodegradable Polymer Blends Based on Poly(butylene succinate) and Grafted Polyrotaxane via Controlled Reactive Processing.

Polymers·2026

相关实验视频

Updated: Jun 21, 2025

Resurrection of Dormant Daphnia magna: Protocol and Applications
07:37

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

18.3K

不断变化的散射能力导致快速适应性辐射.

Takeshi Yamasaki1, Yutaka Kobayashi2

  • 1Yamashina Institute for Ornithology, 115 Konoyama, Abiko, Chiba, 270-1145, Japan. yamasaki@yamashina.or.jp.

Scientific reports
|July 8, 2024
PubMed
概括

快速适应性辐射,新物种的快速进化,是由分散能力的进化性解释的. 模拟表明,岛屿种群中减少的分散驱动了这种进化过程.

科学领域:

  • 进化生物学 进化生物学
  • 生态特异化是指生态特异化.

背景情况:

  • 驱动快速适应辐射的机制仍然不太清楚,现有的理论需要具体的假设.
  • 达尔文的研究突出了适应性辐射,但缺乏对不同种类的全面解释.

研究的目的:

  • 提出一个简单的,经验支持的理论解决方案来解释快速适应性辐射.
  • 通过模拟研究可变散射能力在适应性辐射中的作用.

主要方法:

  • 通过将分散能力的可演变性纳入,扩展了经典的群岛模型.
  • 进行了基于个体的模拟,以模拟岛屿种群的进化动态.

主要成果:

  • 环境的异质性最初降低了分散能力.
  • 在模拟中均分布的岛屿导致由于移民而导致分散减少的停止.
  • 由于最后一个岛屿的持续高分散而引发的跨种群分散的同步减少,导致了快速物种化.

结论:

  • 散射能力的可变性为快速适应性辐射提供了一个统一的机制.
  • 普通群岛的特性,特别是移民模式,是同时发生物种化事件的关键驱动因素.

更多相关视频

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
15:00

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Published on: August 18, 2023

3.3K
Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
08:51

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks

Published on: May 13, 2016

14.0K

相关实验视频

Last Updated: Jun 21, 2025

Resurrection of Dormant Daphnia magna: Protocol and Applications
07:37

Resurrection of Dormant Daphnia magna: Protocol and Applications

Published on: January 19, 2018

18.3K
Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli
15:00

Daily Transfers, Archiving Populations, and Measuring Fitness in the Long-Term Evolution Experiment with Escherichia coli

Published on: August 18, 2023

3.3K
Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks
08:51

Microinjection for Transgenesis and Genome Editing in Threespine Sticklebacks

Published on: May 13, 2016

14.0K