BLENDING INHERITANCE 



191 



of varying degrees of redness and may be classified 

 after the manner of fluctuating variations with the 

 greatest number of kinds 

 at the intermediate degree 

 between pure red and pure 

 white. (See Figure 57.) 



In order to test whether 

 the sixty-four kinds of 

 wheats produced in the 

 second filial generation, as 

 theoretically displayed in 

 Figure 55, really contain 

 separable, though indistin- 

 guishable, determiners for 

 red-kernel, Nilsson-Ehle 

 produced families of the 

 third filial generation by 

 self-crossing plants of the 

 second generation. It was 

 to be expected that, if 

 these hybrid wheats of the 

 second generation carried 

 one, two, three, or more 

 determiners for a red kernel 

 as the theoretical tables in 

 Figures 55 and 57 demand, 

 their progeny would be 

 distributed with reference 

 to the number of red- and 

 white-kerneled individuals, 

 in the following ratios : 



# 



FIG. 57. The distribution of the 

 sixty-four possibilities in the F2 

 generation when three similar 

 determiners act together as a 

 trihybrid. 



