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Table 1 Genotype frequencies of the GNAT1 marker in F2 hatchlings

From: Rapid fixation of non-native alleles revealed by genome-wide SNP analysis of hybrid tiger salamanders

  CC CT TT χ2 P (df = 2)
Family 1 35 29 26 13.18 0.00138
Family 2 32 30 25 9.51 0.00863
Combined 67 59 51 22.56 0.00001
  1. The native allele is represented by "C" and the introduced allele by "T". The χ2 test compares the observed counts to Mendelian expectations (1:2:1). Family 1 and Family 2 are not significantly different (χ2 = 0.12, df = 2, P = 0.9417).