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Table 1 Male:female ratios of expression for A and X or Z genes in four species

From: Dosage compensation is less effective in birds than in mammals

Species and tissue A mean A median X or Z mean X or Z median Male X:A or Z:A ratio Female X:A or Z:A ratio
Mouse       
Brain 1.00 1.00 0.997 0.997 1.30 1.28
Muscle 1.01 0.990 0.967 0.960 0.866 0.875
Liver 1.03 0.993 1.01 0.975 0.726 0.729
Adipose 1.02 0.976 1.04 0.989 0.768 0.755
Human       
Hypothalamus 1.03 1.01 1.01 1.000 1.03 1.05
Muscle 1.02 1.01 0.990 0.989 1.14 1.26
LB cells 1.00 1.00 0.973 0.987 N/A N/A
PBM cells 1.00 1.00 1.00 1.001 0.979 0.981
Zebra finch       
Adult brain 1.04 0.988 1.29 1.25 N/A N/A
P1 brain 0.994 0.957 1.23 1.16 N/A N/A
Liver 0.984 0.950 1.19 1.07 N/A N/A
Kidney 1.04 1.01 1.13 1.09 N/A N/A
Chicken       
Brain 0.997 1 1.40 1.34 1.03 0.771
Heart 1.02 1.02 1.34 1.31 0.923 0.707
Liver 0.989 0.978 1.24 1.20 1.08 0.877
  1. The table shows unlogged values.