SHULL: DUPLICATION OF A LEAF-LOBE FACTOR 

 Table i (continued) 



431 



All of the cases of monomeric B lobes which I have thus far demon- 

 strated in wild plants are shown in Table i. 



2 These families may possibly have a duplication of the B factor, but the evidence 

 for. such duplication is much less adequate than is the evidence for the occurrence 

 of a 3 : I ratio in one or more F2 families from these same crosses. It should be 

 observed however, that both 15 : i and 3 : i ratios might occur in different F2 

 families from the same cross, since the original wild plant used in the cross might 

 have been homozygous for one B factor and heterozygous for the other. 



