Gene Mapping Approaches
Gene Mapping Approaches - Related Videos
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A Practical Approach to Genetic Inducible Fate Mapping: A Visual Guide to Mark and Track Cells In Vivo
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Cited by 16 •
2009
Genetic Inducible Fate Mapping (GIFM) marks and tracks cells with fine spatial and temporal control in vivo and elucidates how cells from a specific genetic lineage contribute to developing and adult tissues. Demonstrated here are the techniques required to fate map E12.5 mouse embryos for epifluorescent and explant analysis.
06:58
Fate Mapping
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2023
Fate mapping is a technique used to understand how embryonic cells divide, differentiate, and migrate during development. In classic fate mapping experiments, cells in different areas of an embryo are labeled with a chemical dye and then tracked to determine which tissues or structures they form. Technological improvements now allow for individual cells to be marked and traced throughout embryonic development and adulthood. This video reviews the concepts behind fate mapping, and then details a...
11:37
QTL Mapping and CRISPR/Cas9 Editing to Identify a Drug Resistance Gene in Toxoplasma gondii
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Cited by 5 •
2017
Details are presented on how QTL mapping with a whole genome sequence based genetic map can be used to identify a drug resistance gene in Toxoplasma gondii and how this can be verified with the CRISPR/Cas9 system that efficiently edits a genomic target, in this case the drug resistance gene.
10:17
Laser-induced Breakdown Spectroscopy: A New Approach for Nanoparticle's Mapping and Quantification in Organ Tissue
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Cited by 18 •
2014
Laser-induced breakdown spectroscopy performed on thin organ and tumor tissue successfully detected natural elements and artificially injected gadolinium (Gd), issued from Gd-based nanoparticles. Images of chemical elements reached a resolution of 100 μm and quantitative sub-mM sensitivity. The compatibility of the setup with standard optical microscopy emphasizes its potential to provide multiple images of a same biological tissue.
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Multi-target Parallel Processing Approach for Gene-to-structure Determination of the Influenza Polymerase PB2 Subunit
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Cited by 3 •
2013
Structure-based drug design plays an important role in drug development. Pursuing multiple targets in parallel greatly increases the chance of success for lead discovery. The following article highlights how the Seattle Structural Genomics Center for Infectious Disease utilizes a multi-target approach for gene-to-structure determination of the PB2 influenza A subunit.
FAQs
Linkage mapping converts co-inheritance into an estimate of genetic distance. When a marker and a trait are inherited together frequently, the region is inferred to contain fewer recombination events between them; more frequent recombination suggests greater separation. This relationship helps researchers order markers relative to one another and narrow genomic regions associated with inherited traits.
DNA sequencing can locate genes directly along a chromosome, providing physical information that complements the relative distances estimated from recombination. This combination helps connect an inheritance pattern with a specific genomic location rather than relying only on marker order or linkage. The resulting information supports investigation of variants associated with traits or disease.
Linkage mapping provides relative positions based on how often markers and traits are co-inherited, whereas physical mapping addresses where genes lie directly along the chromosome. The first describes genetic relationships shaped by recombination, while the second supplies chromosome-level location. Using both perspectives helps researchers connect inherited traits with defined genomic regions.
Markers provide measurable reference points that can be tracked alongside inherited traits. Their patterns of co-inheritance reveal whether a genomic region tends to travel with a phenotype, helping researchers relate genetic variation to observable characteristics. This marker-based framework is especially useful when the trait itself does not immediately identify the responsible genomic location.
A study can begin by examining how genetic markers and the trait are co-inherited, then using recombination rates to estimate their relative distances. Researchers can follow this linkage evidence with physical mapping or DNA sequencing to locate genes directly on the chromosome. The combined results connect inheritance patterns with candidate genomic regions and variants.
These approaches can reveal marker order, estimate distances between genomic features, and identify chromosome regions associated with inherited traits. Physical mapping and sequencing add direct location information, while linkage analysis clarifies inheritance relationships. Together, the results help researchers study how genotype relates to phenotype and investigate the genomic basis of disease-associated variation.
Gene mapping supports the identification of disease-associated variants, genome assembly, and comparative genetics. In breeding research, mapping helps connect inherited characteristics with genomic regions of interest. In human genetics and precision medicine, the same framework contributes to studying disease-related variation and relating genetic information to traits, although the specific interpretation depends on the mapping evidence available.