TABLE 3

The power of Orr's (1998b) method to detect directional selection

No. of characters
Detection threshold (%):2525
050050050
Exponential17.241.413.8a33.13.96.8
Leptokurtic (α = 0.5)39.279.911.133.12.87.5

In the analysis itwas assumed that 10 QTL loci were detected and one fixed mutation occurred per QTL. Power is based on 1000 replicate samples at the α = 0.05 significance level, with one exception.

  • a The P value associated with 9 positive effects was 0.0526.