BLENDING INHERITANCE 



185 



# 



varying degrees of redness and may be classified after 

 the manner of fluctuating variations with the greatest 

 number of kinds at the 

 intermediate degree be- 

 tween pure red and pure 

 white. (See Figure 41.) 



In order to test whether 

 the sixty-four kinds of 

 wheats produced in the 

 second filial generation, as 

 theoretically displayed in 

 Figure 39, really contain 

 separable, though indis- 

 tinguishable, 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 ker- 

 nel as the theoretical 

 tables in Figures 39 and 

 41 demand, their progeny 

 would be distributed with 

 reference to the number of 

 red- and white-kerneled 

 individuals, in the follow- 

 ing ratios : 



5 4 



3 



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FIG. 41. The distribution of 

 the sixty-four possibilities in 

 the F 2 generation when three 

 similar determiners act to- 

 gether as a trihybrid. 



