Three genetic loci encode immunoglobulin molecules: two loci encoding the light chains kappa locus lambda locus -one locus encoding the heavy chain These three loci are located on different chromosomes TABLE 5-1 CHROMOSOMAL LOCATIONS OF IMMUNOGLOBULIN GENES IN HUMAN AND MOUSE Chromosome Gene Human Mouse λLight chain 22 16 K Light chain 2 6 Heavy chain 14 12Three genetic loci encode immunoglobulin molecules: - two loci encoding the light chains - kappa locus - lambda locus - one locus encoding the heavy chain These three loci are located on different chromosomes