TABLE 2

Segregation analysis of two unlinked loci show dihybrid ratios

Number scoredRadio (expected)aRatio (observed)Σχ2P>
5732:11:11:436:6:11:42.610.5
5531:10:10:336:8:8:31.920.5
5933:11:11:434:8:12:51.050.5
5833:11:11:435:11:8:40.970.7
5632:10:10:436:8:10:21.910.5
  • Five pairs of homozygous, unlinked AFLP loci from Table 1 were picked and scored in the progeny of an F2 intercross. Expected and observed ratios were compared by a χ2 test for goodness of fit. In all cases examined (n = 20), pairs of unlinked markers segregate in expected dihybrid ratios for dominant markers.

  • a Expected ratio was rounded to whole numbers for presentation.