Rank ordered strain distribution patterns for different traits in 29 BXD RI strains. a. Body weight. b. Weights of epididymal adipose tissue and liver. c. Content of total, saturated and unsaturated fat, collagen content, collagen integrity and the ratio of lipid to protein content in epididymal adipose tissue. d. Ratio of lipid to protein content in the liver. Data represent means and standard errors of four to five 20 weeks old males per strain after feeding a high fat diet over 16 weeks. FTIR-data are given as relative units as described in Experimental Procedures. Black columns mark the parental strains, B6 and D2, and F1 animals. The distribution patterns are only shown for traits in which significant QTLs were found.