64 



OLOF TEDIN 



TABLE 7. Middle length of F.-pIants of different homozygous 



constitiilion. 



TABLE 8. Differences between the middle lengths of F.-phints of 

 different homozygous constitution. 



A A and aa being about 5 times its standard error. The effect of B 

 is more uncertain, the difference BB — ^5 being only about twice its 

 standard error. 



As to the nature of this correlation — whether it is a case of 

 pleiotropy or of coupling — nothing can be said with certainty luitil 

 further analyses have been made. Perhaps a determination of the 

 middle plant-length of the Fs-families will help to give the solution 

 of the problem. 



