212 



Mendelian Inheritance in Bryonia dioica 



the hypothetical constitution of each gi-oup of plants beuig appended 

 in each case. 



TABLE IV. 



Showhig result of cross F^ plant {Gif/fi.,;/.^ x /", plant (^T,sr, «?„(/„). 



Name of plaut 



15/11 p 



\ 15/11 n I 



I 15/11 g f 



( 15/11 '■ 1 



I 15/11 .1- I 



1 15/11 :5 j 



I 15/11 b J 



( 16/11 </ 1 

 \ 15/11 zi - 

 I 15/11 z3 J 



15/11 V 



Number 



of plants 



in each class 



1 

 2 

 1 



Percentage of 

 two-carpellarv 



Theoretical 

 constitution 



G,G,G,!7.. 

 Gig\G.,G., 



- G,GiiJ„[l2 ^ 

 j4Gip,G232 - 

 [ aiOiG-^G.,} 



Gi3ir/-;/2 

 Uitli9292 



Theoretical 



number of plants 



in each class 



1-25 



2-5 



2-5 



7-5 



2-5 

 1-25 



Our assumption as to constitution obtains confirmation in that the 

 percentages of two-carpellary flowers in types G-iGiG^G.,, GiGiG^go, 

 Gig^GM^, GiffiG^go of this cross agi-ee reasonably well with the per- 

 centage figures for plants of the same constitution from the other cross 

 (Table III, p. 211). This is shown gi-aphically in Table V. 



Accepting our hypothesis, therefore, it may be assumed that plants 

 of the constitution Gi Gi G^ G., bear flowers of which, on the average, 84 

 per cent.-lOO per cent, are two-carpellary; plants of the constitution 

 GjGiG.,(/-2 bear flowers of which, on the average, 71 per cent.-83 per 

 cent, are two-carpellary, and similarly for the other types as shown in 

 Tables III, IV and V, with doubtless a certain amount of overlapping 

 between the different classes. 



