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Table 4 Distance of introns to the 3' end of genes

From: Frequency of intron loss correlates with processed pseudogene abundance: a novel strategy to test the reverse transcriptase model of intron loss

  Lost introns Conserved introns  
  n Mean ± SD (kb) n Mean ± SD (kb) P a
Rats 86 1.11 ± 0.80 148,176 2.05 ± 1.99 8 × 10-9
Mice 45 2.66 ± 1.97 148,176 2.83 ± 3.14 0.414
  1. Only the length of exonic sequences was calculated. aMann-Whitney U test was used to calculate the values of P. kb: kilobase; SD: standard deviation.