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Table 1 Cross-species conservation of housekeeping genes and tissue enriched genes

From: Definition, conservation and epigenetics of housekeeping and tissue-enriched genes

  HKG orthologs TEG orthologs Orthologs of all genes on array
  Count Ratio Count Ratio Count Ratio
Human 1,380 100% 843 100% 17,641 100%
Mouse 1,352 98% 799 95% 16,614 94%
Rat 1,258 91% 763 91% 15,312 87%
Dog 1,287 93% 697 83% 15,127 86%
Fly 752 54% 122 14% 5,111 29%
Worm 639 46% 103 12% 3,973 23%
Yeast 324 23% 20 2% 1,591 9%
P value 0.010 0.065 N/A
  1. The ratio indicates the fraction of human genes with orthologs in other species. 1380, 843 and 17,641 of total HKGs, TEGs and all genes on the array, respectively, are represented in HomoloGene and these numbers were used to calculate the ratio of orthologs.