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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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Genome Annotation and Assembly03:36

Genome Annotation and Assembly

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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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Karyotyping01:17

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Overview
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Genomics02:02

Genomics

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Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
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Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes02:16

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The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
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Genome-wide Association Studies-GWAS01:11

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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
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Updated: Jun 9, 2025

Heuristic Mining of Hierarchical Genotypes and Accessory Genome Loci in Bacterial Populations
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构建万科组图的图形.

Erik Garrison1, Andrea Guarracino2,3, Simon Heumos4,5,6

  • 1Department of Genetics, Genomics and Informatics, University of Tennessee Health Science Center, Memphis, TN, USA. egarris5@uthsc.edu.

Nature methods
|October 21, 2024
PubMed
概括
此摘要是机器生成的。

我们创建了一个新的管道来构建泛基因组图,克服了以前方法的局限性. 这个工具代表了所有的基因组变异,没有偏见,使得更好的分析复杂的序列和进化关系.

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High-throughput Physical Mapping of Chromosomes using Automated in situ Hybridization
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Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies
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科学领域:

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

背景情况:

  • 泛基因组图对于代表多种物种的基因组多样性至关重要.
  • 现有的泛基因组图构造方法往往排除复杂的基因组区域或依赖单个参考基因组,限制它们对变异的全面表示.

研究的目的:

  • 开发一个新的管道,PanGenome Graph Builder,用于构建无偏见和包容性的泛基因组图.
  • 克服当前泛基因组图方法的局限性,这些方法排除了复杂序列或是基因组依赖的参考基因组.

主要方法:

  • 泛基因组图形构建器管道是为构建泛基因组图形而开发的.
  • 它使用全对全的序列对齐来构建一个全面的变化图.
  • 这种方法有助于识别遗传变异和保护区域.

主要成果:

  • 开发的管道成功地构建了无偏差或排除复杂序列的泛基因组图.
  • 由此产生的变化图允许进行详细分析,包括变化识别和保护测量.
  • 该管道还可以检测重组事件并推断家族遗传关系.

结论:

  • 泛基因组图形构建器提供了一个强大的方法来创建全面的泛基因组图形.
  • 该工具增强了分析多个基因组的基因组变异,保护和进化历史的能力.
  • 它代表了泛基因组图构造在基因组研究中的重大进步.