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Table 1 Statistical assessment of geotaxis phenotypic differences before and after selection for each replicate population, as well as between the Y1 and Y25 grand means

From: Y-chromosomes can constrain adaptive evolution via epistatic interactions with other chromosomes

Population t-test df P
Male
 Y1A 5.99 1464 0.0001
 Y1B 3.10 1547 0.0020
 Y1C 4.13 1441 0.0001
 Y25A 2.21 1475 0.0271
 Y25B 0.81 1458 0.4177
 Y25C 1.50 1541 0.1341
 Grand Mean 3.31 4 0.0296
Female
 Y1A 1.22 863 0.2215
 Y1B 6.14 853 0.0001
 Y1C 2.88 843 0.0041
 Y25A 0.46 876 0.6463
 Y25B 1.83 963 0.068
 Y25C 7.09 891 0.0001
 Grand Mean 0.40 4 0.7069
  1. Bolded P-values are significant after Bonferroni correction