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Genome-wide Association Studies-GWAS

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...

Incomplete Dominance

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.

Comparing Copy Number Variations and SNPs

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%...

Single Nucleotide Polymorphisms-SNPs

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,...

Genetic Screens

Genetic Screens

Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which...

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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Updated: Jan 13, 2026

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Published on: June 21, 2018

ゲノム選択におけるハプロタイプの応用

Tessa R MacNish^1,2, Thomas Bergmann^1,2, David Edwards^3,4

¹School of Biological Sciences, The University of Western Australia, Perth, 6009, Australia.

|January 6, 2026

まとめ

この要約は機械生成です。

ゲノム選択と機械学習は作物改良を加速させる。ハプロタイプは単一ヌクレオチド多型とは異なり、局所的な遺伝子間相互作用を捉え、高度な植物育種のための機械学習モデルの適合性を高める。

キーワード:

ハプロタイプゲノム選択機械学習植物育種作物生産

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Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Published on: August 12, 2019

関連する実験動画

Last Updated: Jan 13, 2026

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Candidate Gene Testing in Clinical Cohort Studies with Multiplexed Genotyping and Mass Spectrometry

Published on: June 21, 2018

Infinium Assay for Large-scale SNP Genotyping Applications

Infinium Assay for Large-scale SNP Genotyping Applications

Published on: November 19, 2013

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis

Published on: August 12, 2019

科学分野:

農業科学
遺伝学
バイオインフォマティクス

背景:

持続可能な作物生産には、加速された遺伝的改良が必要である。
ゲノム選択や機械学習を含む分子マーカー技術は、重要なツールである。
単一ヌクレオチド多型を用いた従来の.,methods.,は、複雑な遺伝的相互作用を捉える上で限界がある。

研究の目的:

ハプロタイプブロックを定義する方法をレビューする。
植物育種におけるハプロタイプの応用について議論する。
機械学習における単一ヌクレオチド多型に対するハプロタイプの利点を強調する。

主な方法:

ハプロタイプブロック定義アルゴリズムに関する文献レビュー。
植物育種プログラムにおけるハプロタイプの既存の応用の分析。
形質予測のためのハプロタイプベースのアプローチと単一ヌクレオチド多型ベースのアプローチの比較。

主要な成果:

ハプロタイプは、単一ヌクレオチド多型では捉えられない局所的なエピスタシス効果を説明できる。
ハプロタイプデータは、単一ヌクレオチド多型データと比較して、機械学習モデルにより適している。
定義されたハプロタイプブロックは、ゲノム予測モデルの精度を向上させる。

結論:

ハプロタイプベースのアプローチは、植物育種における機械学習応用の強化のための有望な戦略を提供する。
ハプロタイプの使用は、複雑な形質のより正確な予測につながり、持続可能な作物生産を支援する。
ハプロタイプブロックの定義と応用に関するさらなる研究は、作物遺伝学の進歩に不可欠である。