Table 2 lists the weights of gonadal (GFP), femoral (FFP), mesenteric (MFP) and retroperitoneal (RFP) fat pads, along with total fat pad weight (sum of the four fat pads), adiposity index (AI = TF/weight at sacrifice (WSAC)) and body mass index (BMI = WSAC/NA2 *100) for each MMU2 congenic strain. Similar to large differences in body weight the B62D strain displayed highly significant decreases in adiposity. B62D was the only strain where both sexes had significant decreases in TF, AI and BMI. Interestingly, no difference in adiposity was seen in B62M mice. This discordance indicates the leanness promoting QTL is located in the B62D unique region (Region V). Only minor differences in various fat pad weights were observed for the B62P and B62PM strains (Table 2).