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Genomic Imprinting and Inheritance

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...

Epigenetic Regulation

Epigenetic Regulation

Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...

Epigenetic Regulation

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.

Human Genetics

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.
The complex relationship between genetics and psychology is observable through common biological components such...

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.

Pedigree Analysis

Pedigree Analysis

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Related Experiment Video

Updated: Jun 9, 2026

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

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

Published on: November 3, 2010

Imprinted genes and human disease.

Rosanna Weksberg¹

¹Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Ontario, Canada. rweksb@sickkids.ca

American Journal of Medical Genetics. Part C, Seminars in Medical Genetics

|August 31, 2010

Summary

Human imprinting disorders arise from errors in gene regulation. Advances in bioinformatics and sequencing highlight the complexity of these conditions, requiring clinical expertise for diagnosis and management.

Area of Science:

Genetics
Molecular Biology
Bioinformatics

Background:

Genomic imprinting is a crucial epigenetic mechanism regulating gene expression.
Dysregulation of imprinted genes leads to various human developmental disorders.
Understanding imprinting mechanisms is key to diagnosing and managing genetic conditions.

Discussion:

The complexity of imprinting disorders extends beyond single mutations, involving intricate molecular pathways.
Bioinformatics and advanced sequencing technologies (e.g., next-generation sequencing) are revolutionizing the study of imprinting.
Phenotypic variation in imprinting disorders necessitates a multidisciplinary approach for accurate assessment.

Key Insights:

The traditional view of single-gene or epimutation causation is evolving.

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Last Updated: Jun 9, 2026

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

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

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In Vivo Modeling of the Morbid Human Genome using Danio rerio

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Published on: August 24, 2013

Transient Expression of Proteins by Hydrodynamic Gene Delivery in Mice

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Published on: May 5, 2014

Clinical evaluation of phenotypic variation is vital for advancing the understanding of imprinting disorders.

Integrated approaches combining molecular data and clinical expertise are essential.

Outlook:

Future research will focus on genome-wide analyses to uncover novel imprinting gene interactions.
Improved understanding will enhance the ability to predict phenotypes and recurrence risks for families.
Personalized medical management strategies will be developed based on a deeper comprehension of imprinting disorder mechanisms.