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アラビドプシス・タリアナの遺伝的多様性を形作る一般的な配列ポリモルフィズム
Richard M Clark1, Gabriele Schweikert, Christopher Toomajian
1Department of Molecular Biology, Max Planck Institute for Developmental Biology, 72076 Tübingen, Germany.
まとめ
アラビドプシス・タリアナの配列変異は,数百万の単核酸多形態 (SNP) を明らかにする. 環境と相互作用する遺伝子は高ポリモルフィズムを示し,進化的力が植物ゲノムを形成することを示しています.
科学分野:
- ゲノミクスゲノミクスとは
- 進化生物学の進化生物学について
- 植物科学 植物科学について
背景:
- ゲノム配列の変異は,種内の進化過程によって形作られる.
- 配列の変動を理解することは,適応と進化を理解するために不可欠です.
研究 の 目的:
- アラビドプシス・タライアナの配列変異を駆動するパターンと進化的力を調査する.
- シングル・ヌクレオチド・ポリモルフィズム (SNP) と,有意な多様性を持つゲノム領域を特定する.
主な方法:
- アラビドプシス・タリアナの20の異なるアセンションの高密度配列再配列化.
- シングルヌクレオチドポリモルフィズム (SNP) と大規模ゲノム差異の特定と分析.
- ゲノム全体の最近の選択的掃描の証拠をスキャンします.
主要な成果:
- 100万を超える非冗長なSNPが特定されました.
- ゲノムの約4%は,参照と比較して高い不一致性または削除を示しました.
- 非ランダムなポリモルフィズムパターンが観察され,特に生物の相互作用に関連する遺伝子で観察されました.
- ポリモルフィズムにおける地域的変動と,最近の選択的掃描の証拠が検出されました.
結論:
- アラビドプシス・タリアナは,進化の圧力によって形成された重要なゲノム多様性を表しています.
- 環境相互作用に関与する遺伝子は,ポリモルフィズムのホットスポットである.
- より大きな加入集合を用いたさらなる分析は,人口全体の変動の理解を洗練します.
関連する概念動画
Comparing Copy Number Variations and SNPs
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Single Nucleotide Polymorphisms-SNPs
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,...
Principles of Pharmacogenetics: Types of Genetic Variants
The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
Multi-species Conserved Sequences
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 DNA...
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
Genome-wide Association Studies-GWAS
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...
GWAS does not require the identification of the target gene involved in...
Genetic Variation
Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles, which...
Genes exist in different versions called alleles, which...

