The gonadotropin-releasing hormone (Gnrh) gene maps to mouse chromosome 14 and identifies a homologous region on human chromosome 8

The murine gonadotropin-releasing hormone (Gnrh) locus has been mapped to mouse chromosome 14 using a mouse × Chinese hamster somatic cell hybrid panel. The equivalent human locus, known as luteinizing hormone-releasing hormone (LHRH), has been previously mapped to 8p21-8p11.2. Four other loci mapping to the human chromosome 8 short arm have been mapped to mouse chromosome 8; two of these (PLAT, GSR) lie proximal toLHRH, and two (LPL, DEF1) lie distal toLHRH. The localization ofGnrh, the murine homolog ofLHRH, to mouse chromosome 14 therefore defines a hitherto unrecognized block of homology between man and mouse. Furthermore, it indicates that the region of homology between the human chromosome 8 short arm and mouse chromosome 8 is composed of two separate blocks.