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Table 1 F2 progeny of the cross between the wild-type and the black pupae strain

From: Development, genetic and cytogenetic analyses of genetic sexing strains of the Mexican fruit fly, Anastrepha ludens Loew (Diptera: Tephritidae)

Parents Cage Wild-type black pupae X2
Male Female   (no.) (no.) (3:1)
Wild-type black pupae 1 2,804 952 0.24
   2 2,343 738 1.80
   3 1,866 610 0.17
black
pupae
Wild-type 1 2,190 668 4.03
   2 2,266 759 0.13
   3 1,761 572 0.29
  1. X2 tables = 3.84, P = 0.05, df = 1