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. 2003 Jan;5(1):53–62. doi: 10.1016/s1476-5586(03)80017-9

Table 2.

Genetic Representation of the 19k2 Microarray after Updating of Localization Information.

Number of clones with position known Number of clones with position unknown Total microarray clones Microarray percentage representation Actual genome percentage representation

Chromosome 1 638 1018 1656 8.7% 7.9%
Chromosome 2 532 593 1125 5.9% 7.8%
Chromosome 3 411 558 969 5.1% 6.8%
Chromosome 4 198 507 705 3.7% 6.3%
Chromosome 5 380 432 812 4.3% 6.0%
Chromosome 6 400 487 887 4.7% 5.7%
Chromosome 7 384 488 872 4.6% 5.2%
Chromosome 8 291 336 627 3.3% 4.7%
Chromosome 9 319 402 721 3.8% 4.4%
Chromosome 10 334 369 703 3.7% 4.4%
Chromosome 11 434 489 923 4.8% 4.4%
Chromosome 12 459 457 916 4.8% 4.5%
Chromosome 13 166 178 344 1.8% 3.6%
Chromosome 14 284 312 596 3.1% 3.3%
Chromosome 15 298 309 607 3.2% 3.2%
Chromosome 16 266 342 608 3.2% 2.8%
Chromosome 17 405 415 820 4.3% 2.8%
Chromosome 18 159 151 310 1.6% 2.7%
Chromosome 19 317 490 807 4.3% 2.2%
Chromosome 20 232 204 436 2.3% 2.2%
Chromosome 21 92 114 206 1.1% 1.4%
Chromosome 22 187 181 368 1.9% 1.5%
Chromosome X 211 327 538 2.8% 5.1%
Chromosome Y 8 4 12 0.1% 1.2%
Unknown - 2412 2412 12.7% -
Total 7405 11575 18980 100% 100%

For each chromosome, the number of clones with known and unknown positions is listed, as well as its total representation on the microarray. For comparison, the last column identifies the total percentage size of each chromosome within the genome, based on ISCN chromosome size measurements [18]. Discrepancies between the microarray and actual representations are due to genetic redundancy on the microarray, the large number of clones with completely unknown positions, and that the percentage for actual chromosome genomic contribution includes non-coding sequences.