Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

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
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...
7.0K
Single Nucleotide Polymorphisms-SNPs01:05

Single Nucleotide Polymorphisms-SNPs

14.0K
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
14.0K
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
Genome-wide Association Studies-GWAS01:11

Genome-wide Association Studies-GWAS

12.4K
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.
GWAS does not require the identification of the target gene involved in...
12.4K
Phylogeny01:23

Phylogeny

43.6K
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.
43.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Integrative analysis of CAM photosynthesis reveals its impact on primary metabolism in Yucca.

Journal of experimental botany·2026
Same author

The evolution of leaf traces in eupolypod ferns.

The New phytologist·2026
Same author

DNA-based identification of plants and the genomic nature of plant species differences.

Communications biology·2026
Same author

Modeling of gene regulatory networks: an annotated glossary.

Trends in plant science·2026
Same author

Serial section videography (SSV): A low-cost protocol for generating 3D reconstructions of internal plant structure.

Applications in plant sciences·2026
Same author

Caste-Specific Functional Variation in the Venom of the Army Ant Eciton hamatum.

Molecular ecology·2026
Same journal

Leveraging target enrichment and genome skimming (Hyb-Seq) of herbarium collections to unlock timber DNA barcoding.

Applications in plant sciences·2026
Same journal

Detecting cryptic ghost lineage introgression in four-taxon genomic datasets.

Applications in plant sciences·2026
Same journal

HapAsmbl: A reference-aided pipeline for assembling haplotypes in Nanopore amplicon sequence data of polymorphic populations.

Applications in plant sciences·2026
Same journal

HybSuite: An integrated pipeline for hybrid capture phylogenomics from reads to trees.

Applications in plant sciences·2026
Same journal

Detecting introgression from phylogenetic invariant site patterns using machine learning.

Applications in plant sciences·2026
Same journal

tanggle: An R package for the visualization of phylogenetic networks.

Applications in plant sciences·2026
查看所有相关文章

相关实验视频

Updated: Jun 5, 2025

A Practical Guide to Phylogenetics for Nonexperts
12:00

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

35.3K

使用SNP数据进行族群基因分析的数据驱动指南.

Jacob S Suissa1, Gisel Y De La Cerda2, Leland C Graber3

  • 1Department of Ecology and Evolutionary Biology University of Tennessee at Knoxville Knoxville Tennessee USA.

Applications in plant sciences
|December 4, 2024
PubMed
概括
此摘要是机器生成的。

过单核酸多形态 (SNP) 用于基因组学分析应该避免严格的门. 使用SNP或位置数据会影响树枝长度,但不会影响整体树木拓或分歧时间.

关键词:
甘氨酸 (Glycine) 是一种祖先状态的重建 祖先状态的重建差异时间估计差异时间估计.通过基因型测序 (GBS) 来确定基因型.地方 (locus) 是一个地方.遗传学上的比较方法.单核酸多态性 (SNP) 过.

更多相关视频

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

15.8K
An Integrated Approach for Microprotein Identification and Sequence Analysis
09:37

An Integrated Approach for Microprotein Identification and Sequence Analysis

Published on: July 12, 2022

3.3K

相关实验视频

Last Updated: Jun 5, 2025

A Practical Guide to Phylogenetics for Nonexperts
12:00

A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

35.3K
Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

15.8K
An Integrated Approach for Microprotein Identification and Sequence Analysis
09:37

An Integrated Approach for Microprotein Identification and Sequence Analysis

Published on: July 12, 2022

3.3K

科学领域:

  • 基因组学就是基因组学.
  • 人类遗传学 是一个学科.
  • 进化生物学 进化生物学

背景情况:

  • 讨论了在家族基因分析中过单核酸多态 (SNP) 的最佳实践.
  • 在使用SNP或整个位点 (包括侧边区域) 之间的选择对于遗传学推断仍然不清楚.

研究的目的:

  • 评估SNP与locus使用对族群遗传学分析的影响.
  • 评估SNP保留严格性对遗传学结果的影响.
  • 在不同的过场景下比较分支长度,节点支持和分歧时间估计.

主要方法:

  • 利用了22种*甘氨酸*物种的基因型测序数据.
  • 对比了16个具有不同SNP保留严格性和数据类型 (SNP与locus) 的数据集.
  • 分析了树木拓,分支长度,节点支和分歧时间估计的影响.

主要成果:

  • 在不同数据集中,树拓在很大程度上保持一致.
  • 严格的SNP过 (90-100%的保留) 减少了节点支持,并可能改变推断的关系.
  • 绝对分支长度在SNP和位置数据集之间有显著的差异 (大小有两个数量级).
  • 数据类型和分支长度变化对差异时间估计的影响最小.
  • 族谱影响了对祖先状态和形态进化率的估计.

结论:

  • 除非绝对分支长度至关重要,否则SNP或位置数据集会产生类似的家族遗传推断.
  • 不建议过度过SNP保留的过门,因为可能存在拓不一致和减少支持.
  • 研究人员应该仔细考虑SNP过的严格性,以保持强大的家族遗传信号.