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相关概念视频

Multi-species Conserved Sequences02:51

Multi-species Conserved Sequences

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Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
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Evolutionary Relationships through Genome Comparisons02:54

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

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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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The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
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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.
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Updated: Jun 27, 2025

Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
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梅塔动物园基因地图和数据库:海洋生态系统的参考序列

Todd D O'Brien1, Leocadio Blanco-Bercial2, Jennifer M Questel3

  • 1NOAA Fisheries, Office of Science & Technology, Silver Spring, MD, USA.

Methods in molecular biology (Clifton, N.J.)
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概括

该MetaZooGene地图和数据库 (MZGdb) 提供使用DNA条形码和元条形码的海洋生物多样性数据. 它提供基因序列和绘图工具来探索海洋生物,有助于分类和识别.

关键词:
DNA条形码是指DNA的条形码.海洋生物多样性海洋生物多样性这就是MetaZooGene.参考数据库是指参考数据库中的一个.

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科学领域:

  • 海洋生物学 海洋生物学
  • 基因组学就是基因组学.
  • 生物信息学是一种生物信息学.

背景情况:

  • 海洋生态系统拥有巨大的生物多样性,对全球生态平衡至关重要.
  • 准确识别和分类海洋生物对于生物多样性评估至关重要.
  • DNA 条形码和元条形码是海洋物种识别的强大工具.

研究的目的:

  • 引入MetaZooGene Atlas和数据库 (MZGdb) 作为海洋生物多样性数据的全面资源.
  • 为海洋生物提供获取精选的DNA序列数据.
  • 支持海洋生物多样性,分类和识别方面的研究.

主要方法:

  • 该MZGdb集成了来自NCBI GenBank和BOLD的数据.
  • 它包括关键基因 (COI,12S,16S rRNA,18S,28S rRNA) 的DNA序列.
  • 数据和映射工具可用于定制数据编译和分析.

主要成果:

  • MZGdb为海洋DNA序列数据提供了一个开放式访问门户.
  • 它涵盖了各种海洋生物,从微生物到海洋脊椎动物.
  • 阿特拉斯功能为不同海洋区域的数据覆盖和完整性提供了洞察力.

结论:

  • 该MZGdb通过可访问的,精心策划的DNA序列数据增强了海洋生物多样性的研究.
  • 它促进了对海洋浮游生物和其他海洋生物的全球研究.
  • 该数据库是基于DNA的海洋生物识别和分类的重要参考.