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相关概念视频

Gene Duplication and Divergence02:37

Gene Duplication and Divergence

6.0K
The seminal work of Ohno in 1970 popularized the idea of gene duplication and divergence. DNA sequence comparison studies reveal that a large portion of the genes in bacteria, archaebacteria, and eukaryotes was  generated by gene duplication and divergence, indicating its critical role in evolution.
The duplicated copies of the gene are called Paralogs. Paralogs with similar sequences and functions form a gene family. Across several species, a large number of gene families are...
6.0K
Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

5.7K
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...
5.7K
Phylogenetic Trees03:21

Phylogenetic Trees

45.2K
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.
45.2K
Export of Mitochondrial and Chloroplast Genes02:19

Export of Mitochondrial and Chloroplast Genes

3.6K
A eukaryotic cell can have up to three different types of genetic systems: nuclear, mitochondrial, and chloroplast. During evolution, organelles have exported many genes to the nucleus; this transfer is still ongoing in some plant species. Approximately 18% of the Arabidopsis thaliana nuclear genome is thought to be derived from the chloroplast’s cyanobacterial ancestor, and around 75% of the yeast genome derived from the mitochondria’s bacterial ancestor. This export has occurred...
3.6K
Complementary DNA01:44

Complementary DNA

29.3K
Overview
29.3K
Sanger Sequencing01:57

Sanger Sequencing

752.8K
DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
752.8K

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相关实验视频

Updated: Jun 5, 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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BAD2矩阵:家族基因组矩阵连接,indel编码,以及更多.

Nelson R Salinas1, Gil Eshel2, Gloria M Coruzzi2

  • 1Lewis B. and Dorothy Cullman Program for Molecular Systematics The New York Botanical Garden, Bronx New York USA.

Applications in plant sciences
|December 4, 2024
PubMed
概括

一个新的Python脚本,BAD2matrix,简化了家族基因组矩阵的构建. 它自动化了DNA,氨基酸和形态数据的常见步骤,简化了复杂的分析.

关键词:
连接连接的连接是连接.基因内容 基因内容基因的存在/缺失.印德尔编码的编码方式形态学 形态学 形态学占用过器的使用情况.人类基因组学是什么?减少的氨基酸字母表

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

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相关实验视频

Last Updated: Jun 5, 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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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:

  • 计算生物学 计算生物学
  • 生物信息学是一种生物信息学.
  • 进化生物学 进化生物学

背景情况:

  • 遗传学矩阵的构建涉及多个复杂的步骤.
  • 现有的软件通常需要多个程序来完成这些任务.
  • 需要综合工具来简化族群基因组分析.

研究的目的:

  • 开发一个单一的程序,用于全面的基因组矩阵生产.
  • 为了自动化创建类基因组数据集的关键步骤.
  • 为进化生物学研究人员提供一个用户友好的工具.

主要方法:

  • 开发了BAD2matrix,这是一个用于基因组学矩阵构建的Python脚本.
  • 该脚本处理DNA,氨基酸和形态数据.
  • 它集成了诸如序列连接,indel编码和占用过等常见步骤.

主要成果:

  • BAD2matrix成功地自动化了多个类基因组矩阵生产步骤.
  • 该脚本与类似UNIX的环境兼容.
  • 它简化了复杂的遗传学数据准备管道.

结论:

  • BAD2matrix提供了一个统一的解决方案来构建基因组矩阵.
  • 该脚本提高了生物信息学工作流程的效率.
  • 它是在GNU通用公共许可证v2.2下提供.