Page 7 - Genomics and Applied Biology

Genomics and Applied Biology, 2010, Vol.1 No.3
http://gab.sophiapublisher.com
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Table 1 Distribution test of genes among chromosomes of Populus by Poisson calculator
Chromosome
A,T,G,C
readings
(bp)
No. of
Gene
Expect No.
of Gene
Distribution
test (p
value)
Significance
) ( ij mPij   or
) ( ij mPij  
A,T,G,C readings of
transcripts (bp)
Genes with
EST Proof
LG_I 31073085 3168 3298 0.012 * - 3 714 996 514
LG_II 23365393 2681 2480 0.000 **+ 3 169 289 476
LG_III 17446680 1849 1852 0.482 2 241 785 312
LG_IV 15079815 1433 1600 0.000 **- 1 624 733 236
LG_V 16635682 1701 1766 0.063 1 957 848 295
LG_VI 17657228 1966 1874 0.017 *+ 2 402 959 326
LG_VII 11904284 1286 1263 0.257 1 462 110 210
LG_VIII 15448287 1979 1640 0.000 **+ 2 344 995 351
LG_IX 12408518 1627 1317 0.000 **+ 1 879 011 318
LG_X 19213814 2337 2039 0.000 **+ 2 732 426 480
LG_XI 13171956 1275 1398 0.000 **- 1 465 093 165
LG_XII 13024900 1274 1382 0.002 **- 1 464 484 164
LG_XIII 11495653 1155 1220 0.032 * - 1 358 065 153
LG_XIV 13682591 1422 1452 0.219 1 635 836 248
LG_XV 10190784 1208 1082 0.000 **+ 1 318 402 189
LG_XVI 12122487 1297 1287 0.378 1 490 746 202
LG_XVII 5444010 454 578 0.000 **- 513 598 55
LG_XVIII 12437986 889 1320 0.000 **- 1 385 337 197
LG_XIX 10250695 933 1088 0.000 **- 1 042 867 124
Genome wide 282053848 29934 29934 35 204 580 5 015
Note: * Significant at =0.05; ** significant at =0.01; “-” following the “*” indicates less than expected number at corresponding
significant level; “+” following the “*” indicates more abundant than expected number at corresponding significant level
Table 2 Comparison of gene densities on the chromosomes that share duplication segments
Chromosome Gene density Chromosome Gene density
Ⅱ More abundant than expected Ⅴ As expected
Ⅱ More abundant than expected XIV As expected
Ⅳ As expected Ⅶ As expected
Ⅰ Sparser than expected Ⅲ As expected
Ⅸ More abundant than expected Ⅷ More abundant than expected
Ⅻ Sparser than expected XV More abundant than expected
XVIII Sparser than expected XVIII More abundant than expected
Ⅵ More abundant than expected Ⅵ As expected
Note: The “expected” number of genes on the corresponding chromosome is listed in column 4 in table 1
length of these genes is 2 690 bp, and the median
length is 1 951 bp, indicating the significant
skewness to genes in short lengths. The minimum
length of gene is 149 bp, whereas the largest gene