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Related Concept Videos

Dihybrid Crosses01:18

Dihybrid Crosses

Overview
Genetic Screens02:46

Genetic Screens

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.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...

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Related Experiment Video

Updated: Jul 5, 2026

Large-Scale Multi-Omics Genome-Wide Association Studies (Mo-GWAS): Guidelines for Sample Preparation and Normalization
08:27

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Optimizing parental selection for genetic linkage maps.

J A Anderson, G A Churchill, J E Autrique

    Genome
    |February 1, 1993
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a method to evaluate DNA clones for genetic mapping in wheat. It helps select optimal parent genotypes for breeding programs, enhancing the utility of genetic maps.

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    Published on: August 12, 2019

    Area of Science:

    • Plant Genetics and Breeding
    • Molecular Biology
    • Bioinformatics

    Background:

    • Genetic linkage maps are crucial for plant breeding, but their utility depends on the polymorphism of DNA markers used.
    • Existing genetic maps require specific marker sets that are polymorphic across diverse genotypes for broad applicability, including gene tagging.
    • Selecting appropriate mapping parents is essential for maximizing the information content of genetic maps.

    Purpose of the Study:

    • To calculate the polymorphism information content (PIC) values for 51 low-copy DNA clones in wheat.
    • To utilize PIC values to identify optimal parent combinations for wheat genetic mapping.
    • To develop a methodology for ranking potential mapping parents based on marker informativeness.

    Main Methods:

    • Calculated polymorphism information content (PIC) using gene diversity.
    • Classified restriction fragment patterns across 18 diverse wheat genotypes.
    • Compared potential parent pairs based on polymorphic clone proportion and likelihood of polymorphism in other populations.

    Main Results:

    • Identified specific DNA clones with high polymorphism information content.
    • Determined genotype pairs that yield more informative DNA clones compared to using the most polymorphic single parents.
    • Established a quantitative method for assessing clone informativeness and ranking potential mapping parents.

    Conclusions:

    • The developed methodology effectively quantifies the informativeness of DNA clones for genetic mapping.
    • Selecting specific parent combinations can significantly enhance the informativeness of genetic maps beyond using the most polymorphic individuals.
    • The approach is adaptable for other species and marker types, offering broad utility in genetic research.