**Acknowledgements**

The UTHSC Center for Integrative and Translational Genomics (CITG) has supported production of the BXD colony at UTHSC and will continue to support this colony for the duration of the grant. The CITG also provides generous support for computer hardware and programming associated with GeneNetwork, and our Galaxy and UCSC Genome Browser instances. We thank the support of CITG, and funds from the UT-ORNL Governor's Chair, NIDA grant P30 DA044223, NIAAA U01 AA013499 and U01 AA016662, NHLBI R01 HL151438, and NIDDK R01 DK120567 for the work at UTHSC.
