Related Experiment Video
Updated: Jul 10, 2026

08:27
Large-Scale Multi-Omics Genome-Wide Association Studies (Mo-GWAS): Guidelines for Sample Preparation and Normalization
Published on: July 27, 2021
Linkage disequilibrium and association mapping: an introduction.
1Human Genetics Division, Southampton General Hospital, UK.
Methods in Molecular Biology (Clifton, N.J.)
|November 7, 2007
Summary
Linkage disequilibrium (LD) patterns in human populations are now well-understood, enabling powerful genetic association studies for common diseases. This detailed genomic data also offers insights into human population history and evolutionary forces.
Area of Science:
- Genetics
- Population Genetics
- Genomic Research
Background:
- Understanding the genome's linkage disequilibrium (LD) structure is crucial for genetic research.
- Detailed characterization of LD patterns across human populations has advanced significantly.
- Association mapping is a key application for identifying genes linked to common human diseases.
Purpose of the Study:
- To describe recent developments in characterizing genome-wide linkage disequilibrium.
- To explain the application of association mapping for human disease gene discovery.
- To highlight new research avenues opened by detailed LD information.
Main Methods:
- Genome-wide characterization of linkage disequilibrium patterns.
- Application of association mapping techniques.
- Analysis of population-specific genomic data.
Main Results:
- Unprecedented detail in understanding linkage disequilibrium patterns across diverse human populations.
- Established a vital resource for designing and executing effective association mapping studies.
- Revealed new insights into the genomic landscape shaped by evolutionary processes.
Conclusions:
- Detailed knowledge of linkage disequilibrium is fundamental for genetic association studies.
- This information facilitates research into human population genetics and evolutionary history.
- Advances in LD characterization open new frontiers in genomics and disease gene discovery.
Related Concept Videos
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...
Dihybrid Crosses
Overview
Sex Linked Disorders
Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
Ligand Binding and Linkage
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...
Ligand Binding and Linkage
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...
Epistasis Analysis
Although Mendel chose seven unrelated traits in peas to study gene segregation, most traits involve multiple gene interactions that create a spectrum of phenotypes. When the interaction of various genes or alleles at different locations influences a phenotype, this is called epistasis. Epistasis often involves one gene masking or interfering with the expression of another (antagonistic epistasis). Epistasis often occurs when different genes are part of the same biochemical pathway. The...
