214 



THE AMEBIC AN NATURALIST [Vol. XLVIII 



No. 30,612, that the fact that plants are left unguarded 

 does not affect results. The parents, in all cases, were 

 selected from among the first generation of plants having 

 the supposed zygotic constitution BbNn. The results are 

 given in Table III. 



TABLE III 



.212BRIPG 

 2BR3P2 

 2ER10PC, 



In all cases the off- 

 spring was uniformity of 

 homboidea character. 



5. Bbnn (squares 8 and 

 14) . Plants of this zygotic 

 constitution should resem- 

 ble those of the preceding 

 group, but on being selfed 

 should yield 25 per cent, 

 homozygotic rhomboidea 

 3nn), 50 per cent, het- 

 erozygotic rhomboidea 

 {Bbnn) and 25 per cent. 

 simplex (bbnn). 



These three forms were 

 found to constitute the 

 offspring of a single plant, 

 HoMoScoxic' al ^"XmboiTea^.! 8,212#fllP3, itself an off- 

 spring of a plant of the 

 supposed zygotic constitution BbNn. This plant, from 



