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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...
Epigenetic Regulation01:37

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...
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Background and Environment Affect Phenotype

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Circadian Rhythms and Gene Regulation

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Updated: May 19, 2026

Computational Analysis of the Caenorhabditis elegans Germline to Study the Distribution of Nuclei, Proteins, and the Cytoskeleton
08:01

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Published on: April 19, 2018

Physiological control of germline development.

E Jane Albert Hubbard1, Dorota Z Korta, Diana Dalfó

  • 1Department of Pathology, New York University School of Medicine, New York, NY 10016, USA. jane.hubbard@med.nyu.edu

Advances in Experimental Medicine and Biology
|August 9, 2012
PubMed
Summary

The C. elegans germ line is a sensitive model for studying how environmental conditions impact development. Key signaling pathways mediate these responses, offering insights into lifespan and metabolism.

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Area of Science:

  • Developmental biology
  • Environmental science
  • Genetics

Background:

  • The C. elegans germ line is a sensitive model for studying environmental impacts on development.
  • Germline development is regulated by environmental conditions, including diapause.
  • Conserved signaling pathways mediate responses to physiological changes.

Purpose of the Study:

  • To review germline development in C. elegans under varying nutritional conditions (feasting, food-limited, fasting).
  • To explore connections between lifespan, metabolism, and germline function.
  • To identify special considerations for studying germline development under altered conditions.

Main Methods:

  • Review of recent studies on C. elegans germline development.
  • Analysis of conserved signaling pathways (AMPK, Insulin/IGF, TGFβ, TOR-S6K, nuclear hormone receptors).
  • Comparison with Notch signaling in germline cell fate control.

Main Results:

  • Germline development is sensitive to environmental and physiological changes.
  • Specific signaling pathways mediate these sensitivities.
  • These pathways interact with but are distinct from Notch signaling.

Conclusions:

  • The C. elegans germ line is a valuable model for understanding environmental influences on development.
  • Nutritional status significantly impacts germline development and lifespan.
  • Further research is needed to address outstanding questions in the field.