Primary trisomics are useful for locating genes and linkage groups on specific chromosomes through the modification of genetic ratios by the extra chromosome. They also are useful in studying the phenotype and biochemical effects of individual chromosomes. Three primary trisomics (Palmer, 1976) were used in attempts to locate mutants to one of these chromosomes.
Palmer, R. G.
"Research Notes : United States : Summary of trisomic linkage data in soybean,"
Soybean Genetics Newsletter: Vol. 11
, Article 43.
Available at: http://lib.dr.iastate.edu/soybeangenetics/vol11/iss1/43