9 -; 



8^ 



7 



w 6 - 

 iZ 



^ 4 - 



E 



2 



1 



i 

 i- 



Parker Lake 



D Expected; 



i 



■ Obsen«d ■. 





*# 



i 2 3 



Yellowstone Hybrid Index 



Figure 1 . Observed and expected random distributions of Yellowstone hybrid index scores in the sample 

 from Parker Lake. Hybrid index is the number of diagnostic loci out of four at which an individual 

 possessed PINE fragments characteristic of Yellowstone cutthroat trout. 



