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Related Concept Videos

Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Learning Disabilities01:25

Learning Disabilities

Learning disabilities are cognitive disorders caused by neurological impairments that affect cognitive functions like language and reading, without indicating overall intellectual or developmental challenges. These disabilities differ from global intellectual or developmental disabilities as they are limited to distinct cognitive functions. Common learning disabilities include dysgraphia, dyslexia, and dyscalculia, each of which impacts unique aspects of learning.
Dyslexia
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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.
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Intellectual Disability01:29

Intellectual Disability

Intellectual disability (ID) is a neurodevelopmental condition characterized by deficits in intellectual and adaptive functioning that manifest during the developmental period. This condition encompasses challenges in reasoning, memory, problem-solving, and learning, accompanied by impairments in everyday life skills, such as communication, self-care, and social interactions. Intellectual disability affects approximately 1% of the population in the United States, impacting an estimated 5...
Human Genetics01:28

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
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Related Experiment Video

Updated: Jul 18, 2026

A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations
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Idiopathic learning disability and genome imbalance.

S J L Knight1, R Regan

  • 1Oxford Genetics Knowledge Park, Wellcome Trust Centre for Human Genetics, University of Oxford, UK. sknight@well.ox.ac.uk

Cytogenetic and Genome Research
|November 25, 2006
PubMed
Summary

Genetic research has significantly advanced the understanding of learning disabilities (LD), a common condition. New technologies now improve diagnostic capabilities by identifying genome imbalances linked to idiopathic LD (ILD).

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An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations

Published on: November 3, 2010

Area of Science:

  • Genetics
  • Neuroscience
  • Developmental Biology

Background:

  • Learning disability (LD) is a prevalent, lifelong condition affecting approximately 3% of the population.
  • Understanding the genetic origins of idiopathic LD (ILD) has seen significant progress in the last 10-15 years.
  • Genome imbalance is increasingly recognized as a key factor in the etiology of ILD.

Purpose of the Study:

  • To review recent advances in understanding the genetic basis of LD.
  • To discuss emerging technologies for diagnosing ILD.
  • To highlight new considerations and future research directions.

Main Methods:

  • Review of genetic technologies such as multi-telomere FISH and array comparative genomic hybridization (CGH).
  • Discussion of novel diagnostic approaches for ILD.
  • Analysis of copy number polymorphisms (CNPs) and their role in ILD.

Main Results:

  • Technological advancements have demonstrated the importance of genome imbalance in ILD.
  • New methods have improved diagnostic capabilities by approximately 15-20%.
  • Copy number polymorphisms (CNPs) present complexities in interpreting genome imbalance in ILD.

Conclusions:

  • Genomic approaches have revolutionized the understanding of LD etiology.
  • Improved diagnostic tools facilitate genotype/phenotype correlations.
  • Further research into genetic factors will enhance understanding of neurocognitive function.