answer to restoring the American chestnut linkage map
Once king of eastern forests, the American chestnut was wiped out by blight. Now it is poised to rise again. In order to be able to control this process, biologists develop chestnut linkage maps. A linkage map is a genetic map of a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome. Such linkage mapping becomes critical for identifying the location of genes that cause genetic diseases.