Mouse Facts

The "laboratory mouse" originated from a mixture of M. m. domesticus, M. m. musculus, and M. m. molossius subspecies. An inbred strain of the laboratory mouse is defined as a strain that has been brother/sister mated for 20 or more consecutive generations and can be traced to a single ancestral pair. For further information about inbred strains of mice see Strains, SNPs and Polymorphisms.

Mouse Genome Length Estimates 2,716,965,481 bp Reference assembly (C57BL/6J, "golden path") length: the sum of non-redundant top level sequence regions (J:80507). 2.5 x 109 bp Mouse Genome Sequencing Consortium. 2002. Initial sequencing and comparative analysis of the mouse genome. Nature 420: 520-562. 1355.5 cM BSS and BSB crosses: Rowe LB; Barter ME; Kelmenson JA; Eppig J. 2003. Genome Res 13(1):122-33 (a href="http://www.informatics.jax.org/reference/J:81431">J:81431). 1450 cM Copeland, NG, et al. 1993. Science 62:57-66. (J:14384). 1360.9 cM Dietrich, WF et al. 1996. Nature Mar 14:380(6570)149-52 ( J:34212).

Mouse Chromosomal Size Mapped Length represents the (MGI) estimated cM position of the most distally placed locus on that chromosome. Total Estimated Size omits centromeres and telomeres which would add, on average, ~8 Mb per chromosome or ~160 Mb to the genome. It also omits uncaptured gaps between supercontigs. Chromosome Mapped

Length (cM) Total Estimated Size (Mbp)

(NCBI build GRCm38) 1 98.5 195 2 103.9 182 3 82.7 160 4 88.6 157 5 90.2 152 6 79.0 150 7 89.1 145 8 76.2 129 9 75.1 125 10 77.9 131 11 88.0 122 12 63.9 120 13 67.3 120 14 66.4 125 15 59.0 104 16 57.8 91 17 61.3 95 18 59.4 91 19 56.9 61 X 171 Y 92 MT 16299 bp Total: 1441.2 2800