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Microsatellite polymorphism linkage map of human chromosome 13q
A Bowcock1, S Osborne-Lawrence, R Barnes
1Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas 75235-9063.
Genomics
|February 1, 1993
Summary
Researchers developed a high-resolution genetic map of chromosome 13 using microsatellite and RFLP markers. This map aids in understanding chromosome 13, crucial for genetic disease research.
Area of Science:
- Genetics
- Genomics
- Molecular Biology
Background:
- Chromosome 13 harbors genes associated with various genetic disorders.
- Developing high-resolution genetic maps is essential for gene mapping and understanding chromosomal abnormalities.
Purpose of the Study:
- To construct a primary linkage map of chromosome 13 using polymorphic microsatellite and RFLP markers.
- To integrate microsatellite and RFLP data for an enhanced map of chromosome 13q.
Main Methods:
- Isolation of twelve polymorphic (CA)n microsatellites from a flow-sorted chromosome 13 genomic library.
- Genotyping of microsatellite and RFLP markers in 41 Centre d'Etude Polymorphisme Humain (CEPH) families.
- Confirmation of marker order using rodent-human somatic cell hybrid panels.
Main Results:
- A primary linkage map spanning 144 cM from 13cen to 13q34 was constructed with high confidence in marker order.
- An integrated map of chromosome 13q, spanning 209 cM, was developed using both microsatellite and RFLP markers.
- The overall spontaneous mutation rate for the (CA)n repeat markers was determined to be 0.00012 per locus per gamete.
Conclusions:
- The developed genetic map provides a valuable resource for mapping genes on chromosome 13.
- High-resolution mapping facilitates the identification of disease-associated loci and the study of chromosomal aberrations.
- The study contributes to a deeper understanding of chromosome 13's genetic architecture and its role in human health.