18 



A MANUAL OF MENDELISM 



carried by the pure kind having wrinkled seeds with 

 green albumen and those carried by the hybrids : 



By the pure kind By the hybrids 



If the hybrids contain equal numbers of these two 

 pairs of materials, then equal numbers of the combina- 

 tions Rw and ww, and Yg and gg should be produced. 

 But, as the two sets of materials are distributed 

 independently and simultaneously, the combinations 

 formed by one set should be distributed equally among 

 those formed by the other, thus : 



Rw Rw WW WW 



Yg gg 



WW 



Yg 



Round with 



yellow 

 albumen 



Round with 



green 



albumen 



Wrinkled with 



yellow 



albumen 



gg 



Wrinkled with 



green 



albumen 



"The actual numbers found of each of these kinds of 

 seeds were : 



* For ease and accuracy in manipulation it is well to represent the 

 pure kind as containing the same number of hues of materials as the 

 hybrid. 



