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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.
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In Vivo Forward Genetic Screen to Identify Novel Neuroprotective Genes in Drosophila melanogaster
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Identifying Toxicant-Interacting Genes Using Forward Genetic Screening in Zebrafish.

Jonathon T Hill1

  • 1Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, UT, USA. jhill@byu.edu.

Methods in Molecular Biology (Clifton, N.J.)
|May 10, 2019
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Summary

Forward genetic screening in zebrafish identifies new genes influencing traits. This protocol details N-ethyl-N-nitrosourea mutagenesis, breeding, screening, and mapping for genetic discovery.

Keywords:
Forward geneticsGene discoveryGenetic mappingMutagenesis

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Area of Science:

  • Genetics and Developmental Biology
  • Model Organism Research

Background:

  • Forward genetic screening is crucial for discovering genes controlling biological functions.
  • Zebrafish are a powerful vertebrate model for genetic studies due to their rapid development and optical transparency.

Purpose of the Study:

  • To provide a comprehensive protocol for conducting forward genetic screens in zebrafish.
  • To enable the identification of novel genes associated with specific phenotypes.

Main Methods:

  • Mutagenesis using N-ethyl-N-nitrosourea (ENU) to induce random mutations.
  • Controlled mating strategies for generating mutant lines.
  • Systematic phenotypic screening to identify individuals with altered traits.
  • Genetic mapping techniques to pinpoint the location of causative mutations.

Main Results:

  • The protocol successfully outlines the steps for ENU-based forward genetic screening in zebrafish.
  • Demonstrates the feasibility of identifying and mapping novel genes affecting various phenotypes.

Conclusions:

  • This protocol offers a robust framework for genetic discovery in zebrafish.
  • Facilitates the identification of new genes involved in development and physiology.