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Genetic Map Construction
Genes that control various traits are located on nuclear
chromosomes. Comparable to a road map that locates cities and
towns, a gene map marks the locations and relative positions of
specific genes on these chromosomes. Gene or linkage maps are
constructed with molecular markers, which, unlike morphological
markers, are not translated in the phenotype. Distances are
established by linkage analysis, which determines the frequency
at which two gene loci become separated during chromosomal
recombination. In this way, genes that may be associated with
the expression of agronomically important traits could be
identified, tagged and traced with molecular markers as marker
assisted selection (MAS) for their presence or absence.
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Furthermore, on a genetic linkage map, DNA markers flanking
the gene of interest are identified to quickly infer the
presence of the desirable gene in the offspring.
Ag-Biotech offers genetic map development for various crops
to guide and assist plant genetic researchers on their hunt for
various agronomically important gene(s). Genetic linkage maps
can provide a more direct method for selecting desirable genes
via their linkage to easily detectable molecular markers.
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