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相关概念视频

Cis-regulatory Sequences02:02

Cis-regulatory Sequences

9.6K
Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
9.6K
Synteny and Evolution02:31

Synteny and Evolution

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John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
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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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Eukaryotic Evolution01:24

Eukaryotic Evolution

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The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
29.9K
Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

7.0K
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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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: May 13, 2025

Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face
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Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face

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在灵长类动物进化过程中解决监管变化的缺失背景问题.

Genevieve Housman1, Audrey Arner2,3, Amy Longtin2,3

  • 1Department of Primate Behavior and Evolution, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.

ArXiv
|April 16, 2025
PubMed
概括
此摘要是机器生成的。

非编码DNA中的监管变异驱动灵长类动物的适应. 功能性基因组学数据,特别是在不同的环境中,对于理解这些适应性特征及其与进化和疾病的联系至关重要.

关键词:
取决于环境的基因调节.进化 演化 演化 演化 演化 演化 演化 演化功能性基因组学 功能性基因组学适应性的遗传学它们是灵长类的灵长类.

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Radioactive in situ Hybridization for Detecting Diverse Gene Expression Patterns in Tissue
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相关实验视频

Last Updated: May 13, 2025

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Reverse Dissection and DiceCT Reveal Otherwise Hidden Data in the Evolution of the Primate Face

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科学领域:

  • 进化生物学是进化的生物学.
  • 基因组学就是基因组学.
  • 灵长类动物的进化

背景情况:

  • 灵长类动物的适应性特征变异经常涉及非编码DNA.
  • 功能性基因组数据是理解调节变异的关键,但在非人类灵长类动物中很少.
  • 现有的数据往往缺乏组织,细胞类型和发育背景,限制了对上下文依赖影响的洞察力.

研究的目的:

  • 审查灵长类动物中上下文依赖的调节位置的进化相关性.
  • 探索用于映射上下文依赖变化的挑战和解决方案.
  • 讨论这些数据可以解决的科学问题.

主要方法:

  • 文献综述专注于灵长类动物的功能基因组学.
  • 分析产生和解释大规模基因组数据所面临的挑战.
  • 讨论依赖上下文的监管数据的潜在应用.

主要成果:

  • 在灵长类动物进化过程中,上下文依赖的调节基点与灵长类动物进化高度相关.
  • 在为非人类灵长类动物生成全面的功能基因组数据方面存在重大挑战.
  • 新兴的解决方案和方法正在改进数据生成和分析.

结论:

  • 解决依赖上下文的监管变化的数据缺口至关重要.
  • 这些数据将揭示进化过程和监管适应.
  • 获得的洞察力可以为人类疾病的理解提供信息.