The color gradient over the heritability estimates ranges from the lowest heritability estimate (White) to the highest heritability estimate (Red) in the given study. For the TwinsUK heritability estimates the bold values indicate heritability estimates with a 95% confidence interval not overlapping 0. The estimates for are the proportion of variance explained (PVE) estimates (“chip heritability”). We report the Winter (W), Summer (S), and seasons Combined (C) datasets. For the Davenport study bold values indicate heritability estimates with a standard error not overlapping 0. For we report results using all mice (All), just males (M), just females (F), using an average per strain (Avg), and using a single mouse per strain (One). No significance value was reported for the Org and O’Connor heritability estimates. The coloring over the QTL/GWAS studies indicates if each taxon had a significant association (Blue) or not (Dark Grey) in the given study. Light grey indicates that the taxon was not observed in the given study or was excluded from the studies analysis for other reasons. The QTL and GWAS studies shown in the figure are the top GWAS hits from (Davenport), the top stool GWAS results from (Bl), QTL results form (B), QTL results from (L), QTL results from (M), and GWAS results from (Org). See Experimental Procedures for more details.