
Chromosome X displays no difference in total map length between the Mmd and Mmc cross and the Mmd and Mmm cross despite harboring multiple intervals with divergent map lengths. The chromosome X linkage maps constructed from both crosses are shown, with markers anchored to their common physical positions on the mouse reference genome (build 37), which was derived from an inbred strain predominately of Mmd origin (Yang et al. 2007). Asterisks denote intervals with significantly longer map lengths in one cross.











