Peromyscus maniculatus species complex, captive stock origins, and cross results. Ranges are indicated by color, except P. maniculatus, which is shaded. *P. sejugis range includes adjacent P. maniculatus populations which exhibit greater affinities to this species [31, 32]. Ranges of P. keeni, P. maniculatus, P. melanotis, and P. sejugis extend beyond map. LOI: Loss of (genomic) imprinting; X skewing: skewing of X chromosome during inactivation in somatic tissues. Studies from the 1930s–1950s period suggest asymmetries in crosses between other populations/species (i.e., besides PO and BW).
