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Table 5 Comparison of d N /d S values for sex-biased genes to unbiased genes for brain, tail, and gonad tissues

From: Transcriptome assemblies for studying sex-biased gene expression in the guppy, Poecilia reticulata

  Brain Tail Gonad
  (N) dN/dS p-value (N) dN/dS p-value (N) dN/dS p-value
All          
Unbiased 7386 0.097   5466 0.100   1667 0.099  
Male-biased 105 0.082 0.015 279 0.096 0.474 1350 0.122 < 0.0001
Female-biased 653 0.129 < 0.0001 266 0.119 < 0.0001 1984 0.112 < 0.0001
Autosomal          
Unbiased 6061 0.096   4383 0.100   1328 0.097  
Male-biased 96 0.084 0.083 221 0.094 0.576 1111 0.122 < 0.0001
Female-biased 542 0.131 < 0.0001 199 0.119 < 0.0001 1561 0.111 < 0.0001
Single Tissue          
Unbiased 2018 0.094   504 0.124   104 0.135 (< 0.0001)
Male-biased 74 0.077 0.061 179 0.091 0.00014 1070 0.122 0.0038 (< 0.0001)
Female-biased 310 0.130 < 0.0001 98 0.122 0.337 1368 0.108 0.00014 (< 0.0001)
Multiple Tissue          
Unbiased 4043 0.096   3879 0.097   1224 0.094  
Male-biased 22 0.107 0.929 42 0.107 0.452 41 0.105 0.336
Female-biased 232 0.132 < 0.0001 101 0.116 0.0017 193 0.131 < 0.0001
Highly expressed          
Unbiased 2220 0.079   1103 0.090   550 0.084  
Male-biased 23 0.076 0.328 50 0.102 0.120 684 0.125 < 0.0001
Female-biased 183 0.115 < 0.0001 40 0.104 0.191 499 0.112 < 0.0001
  1. We first compare mean dN/dS values for all sex-biased genes (FDR < 0.1 and median fold-change: brain 1.5 fold; tail 1.7 fold; gonad 3.5 fold) to unbiased genes (FDR > 0.1, log2CPM > 2). We then compare sex-biased genes mapped to autosomal linkage groups only. We also compare those expressed only in a single tissue and multiple tissues separately. In the single tissue gonad set we also compared dN/dS to unbiased genes on autosomal linkage groups only (p-values given in brackets). Finally, we compared only highly expressed genes (>32 CPM). For each comparison we give the number of genes (N), the mean dN/dS, and p-value, with p-values less than 0.0001 in bold.