Reconstructing the Genomic Architecture of Ancestral Mammals: Lessons From Human, Mouse, and Rat Genomes

Table 2.

Three-Way Human–Mouse–Rat Synteny Blocks of Size of Least 300 kb or 1 Mb in Human




Human

Mouse

Rat
Chromosomes included 1—22, X 1—19, X 1—20, X
Total length (Mb) 3020 2577 2720
300 kb three-way synteny blocks
   # Blocks 391 391 391
   Mean synteny block length (kb) 6,702 5,994 6,358
   Maximum synteny block length (kb) 79,235 64,310 71,003
   Total synteny block length (kb) 2,620,531 2,343,664 2,486,156
   Total synteny block length (% of genome) 86.79% 90.94% 91.41%
   Mean breakpoint region length (kb) 763 446 548
   Maximum breakpoint region length (kb) 26,140 6,489 11,270
   Total breakpoint region length (kb) 280,751 165,616 202,601
   Total breakpoint region length (% of genome) 9.30% 6.43% 7.45%
1 Mb three-way synteny blocks
   # Blocks 289 289 289
   Mean synteny block length (kb) 9,225 8,156 8,643
   Maximum synteny block length (kb) 79,879 64,895 71,394
   Total synteny block length (kb) 2,666,132 2,357,154 2,497,941
   Total synteny block length (% of genome) 88.30% 91.46% 91.84%
   Mean breakpoint region length (kb) 883 560 716
   Maximum breakpoint region length (kb) 26,140 6,897 11,383
   Total breakpoint region length (kb) 235,003 150,575 191,757
   Total breakpoint region length (% of genome)
7.78%
5.84%
7.05%
  • The lengths of breakpoint regions include those between synteny blocks, and exclude those at chromosome ends.

This Article

  1. Genome Res. 14: 507-516

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