TABLE 1

Summary of polymorphism and divergence statistics

BiasNo. of genesSignificant MK testsaPositive selectionbDscPsdDnePnfP-valueg
Male3377744447370112<0.0001
Female2863631233299900.15
Non-sex3010436267121830.51
  • a McDonald–Kreitman (MK) tests were performed for each gene and considered significant if P < 0.05.

  • b Genes with significant MK tests showing a relative excess of nonsynonymous fixed differences.

  • c The total number of synonymous fixed differences.

  • d The total number of synonymous polymorphisms.

  • e The total number of nonsynonymous fixed differences.

  • f The total number of nonsynonymous polymorphisms.

  • g The P-value of the summed data as determined by a χ2-test.