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相关概念视频

Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

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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...
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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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Phylogenetic Trees03:21

Phylogenetic Trees

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Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
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Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

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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...
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The Tree of Life - Bacteria, Archaea, Eukaryotes02:40

The Tree of Life - Bacteria, Archaea, Eukaryotes

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The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
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Genetics of Speciation02:16

Genetics of Speciation

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Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
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相关实验视频

Updated: Jun 25, 2025

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

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在贝叶斯系遗传学中的数据集成.

Gabriel W Hassler1, Andrew Magee2, Zhenyu Zhang2

  • 1Department of Computational Medicine, University of California, Los Angeles, USA, 90095.

Annual review of statistics and its application
|May 22, 2024
PubMed
概括
此摘要是机器生成的。

贝叶斯系遗传学整合了各种数据用于进化研究. 先进的统计模型和计算方法有助于重建生物的历史,了解传播动态.

关键词:
贝叶斯网络是贝叶斯网络.斯过程是高斯过程.连续时间的马尔科夫过程遗传学上的比较方法.植物地理学 植物地理学

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A Practical Guide to Phylogenetics for Nonexperts
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相关实验视频

Last Updated: Jun 25, 2025

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

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A Practical Guide to Phylogenetics for Nonexperts
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A Practical Guide to Phylogenetics for Nonexperts

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Creating and Applying a Reference to Facilitate the Discussion and Classification of Proteins in a Diverse Group
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Creating and Applying a Reference to Facilitate the Discussion and Classification of Proteins in a Diverse Group

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科学领域:

  • 进化生物学是进化的生物学.
  • 计算统计的计算统计.
  • 流行病学 流行病学

背景情况:

  • 现代生物研究从多个来源产生了大型,复杂的数据集.
  • 遗传学对于重建进化历史和理解传播动态至关重要.
  • 整合各种数据 (遗传,时间,空间,环境) 是标准的做法.

研究的目的:

  • 为了应对进化研究中分析大型复杂数据集的挑战.
  • 突出在贝叶斯族遗传学中的统计建模和计算方法方面的进展.
  • 讨论当前的研究前沿和该领域的开放问题.

主要方法:

  • 利用贝叶斯系遗传学来重建进化历史.
  • 开发复杂的,分层统计模型,容纳离散和连续数据.
  • 推进计算方法来处理大量的参数空间在家族遗传学分析.

主要成果:

  • 贝叶斯系遗传学为整合各种数据类型提供了一个连贯的框架.
  • 复杂的模型可以包含遗传序列,时间,位置,表型和共变量.
  • 计算进步使以前难以处理的模型在计算上变得可处理.

结论:

  • 贝叶斯系遗传学对于理解生物的进化和病原体的传播至关重要.
  • 统计建模和计算的持续发展对未来的研究至关重要.
  • 该领域正在积极研究新的方法来解决复杂的进化问题.