Related Experiment Videos
Murine albino-deletion complex: high-resolution microsatellite map and genetically anchored YAC framework map
B A Rikke1, D K Johnson, T E Johnson
1Institute for Behavioral Genetics, University of Colorado, Boulder 80309-0447, USA.
Genetics
|October 23, 1997
Summary
Researchers mapped deletion endpoints in the mouse chromosome 7 albino-deletion complex using simple-sequence length polymorphism (SSLP) markers. This refined the genetic map and confirmed deletion sizes, aiding positional cloning efforts.
Area of Science:
- Genetics
- Genomics
- Mouse Models
Background:
- The murine albino-deletion complex on chromosome 7 is crucial for positional cloning.
- Understanding deletion endpoints is key for genetic mapping and trait localization.
Purpose of the Study:
- To precisely map deletion endpoints within the murine albino-deletion complex.
- To establish a high-resolution genetic map of simple-sequence length polymorphism (SSLP) markers.
- To refine the understanding of deletion sizes and flanking genomic regions.
Main Methods:
- Utilized Mit simple-sequence length polymorphism (SSLP) markers to map deletion endpoints.
- Employed the European Collaborative Interspecific Backcross panel for genetic distance determination.
- Constructed a genetically anchored yeast artificial chromosome (YAC) framework map.
Main Results:
- Determined the map order of numerous previously unresolved SSLP markers.
- Established an SSLP-based deletion map with an average marker resolution of 0.3-0.4 cM.
- Observed that the largest deletion region distal to Tyr is significantly larger than the proximal region.
Conclusions:
- The high-resolution SSLP map refines the murine albino-deletion complex, enhancing its utility for positional cloning.
- The study provides a robust genetic framework for chromosome 7.
- Potentially increased recombination rates flanking deletions may explain observed size discrepancies.