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Table 1 Distribution of MARs on chromosomes

From: Genome-wide mapping of matrix attachment regions in Drosophila melanogaster

Chromosome arm Size (Mb) Number of genes Gene density (per 100 kb) Number of MARs DNA (kb) per MAR Genes per MAR
2 L 23.0 3048 7.5 1067 21.5 2.9
2R 21.1 3279 6.4 1025 20.6 3.2
3 L 24.5 3001 8.2 1337 18.3 2.2
3R 27.9 3759 7.4 1437 19.4 2.6
4 1.3 100 13.5 34 38.2 2.9
X 22.4 2397 9.4 2453 9.1 1.0
Total 120.4 15584 7.7 7353 16.4 2.1