24 



" Bof/iies " in Cnlinanj Peas 



The details are as follows : 



Offspring 



Parent 



Class 3 



Class 2 



These 16 families give a total of IIG typical and 935 aberrant, but it 

 is obvious that there is no unifoi-inity in their comjiosition. The last 

 two differ considerably from the rest in containing a distinctly higher 

 proportion of typical plants. The parent of one of these was moreover 

 classed as class 2. 



The genetic behaviour of the types and intermediates may now be 

 summarized as follows : 



Perfectly typical plants often breed true, but they may throw any of 

 the aberrant forms, though never more than a small percentage of 

 them. 



Plants of class 2 commonly behave genetically like the types them- 

 selves. We have included in class 2 such plants as have straight pods 

 together with others showing some curvature, but most of this class con- 

 sists of plants with a low degree of curvature in many pods (as Plate XIII, 

 fig. 15). Those which had any straight pods at all behaved genetically 

 like types. One plant (155) however which had only a slight degree 

 of curvature was proved by its offspring to be of the genetic com- 

 position of class 3. Three plants genetically of Group A, were shown 

 by their offspring to differ in composition from most of that Group, 



1 Though this plant gave no offspring typical it may be included here, because the 

 family is obviously of the same general composition as the rest, and because the families 

 l()0-2 descend from it. 



