1908] 



SH UL L—MENDELIA N INHERIT A NCE 



105 



the offspring should consist of both branched and unbranchcd indi- 

 viduals in the ratio 1:1. 



In the summer of 1905^ 59 offspring were reared from this cross, 

 2% branched and 31 unbranched, showing either that branching is 



Fig. 2. 



strai: 



•» 



sun- 



flower; leaves removed to display the branching habit. 



dominant, and the original branched plant was a heterozygote, or that 

 branching is not a Mendelian character. About half of the unbranched 

 plants showed a few weak branches about the base, but none had 

 more than four branches, while none of the branched individuals had 



