May t»m s. NOHARA :— GENETS) STUDIES OF SOME CHARACTERS 95 



In assorting I got the results as shown in 4 columns of the 

 right hand side of the table." In comparing the number of 

 hard-pod families with that of soft-pod ones it is very probable 

 that Fi in both cases split into two sorts (hard and soft) in 

 the ratio 9 : 7 in regard to the texture of pod onl}', as we 

 expected it to do, but we may think also that the ratio might 

 be 1 : 1 instead of 9 : 7 as both ratios are very near. 



When we make exact calculations based on these results 

 we get : 



Hard pod :— 33i) 1 



o c 1 000 observed 



Soft pod :— 283 J 



Total or n :— 622 



Hard pod : -34-9.88) 



Soft pod :-272.12l expeCted 



Deviation :— + 10.88 



Standard error :— + 12. 37 2; 

 The above calculations are based also on the expectation 

 of splitting into 9 : 7, but when wc do the same thing based 

 on ratio 1:1 we get— 28.00 for deviation and + 12.47 for 

 standard error and in comparing it is at once evident to think 

 the former case is more fit than the other and we see in turn 

 that the assumption of complementary factors is correct and 

 this was further tested in following generation. 



F, : To determine the exact nature of F 2 individuals it 

 is necessary to see the behavior of their offspring or those 

 individuals of F 8 generation, so I took up at random 60 in- 

 dividuals from "I" family and 54 from " V " of French x 

 Japanese in the following way : — 



From I, 35 pigmented hard pods, pedigree nos. 1—3.1 ; 14 

 pigmented soft pods, pedigree nos. 36—49 ; 6 white hard pods, 

 pedigree nos. 50—54 ; and 6 white soft pods, pedigree 110s. 

 55—60 ; and from family Y, 25 pigmented hard pods, pedigree 

 nos. 1— L'."> ; 19 pigmented soft pods, pedigree DOS. 26— 14; 6 

 white hard pod-, pedigree nos. 45—50; and I- white soft pods, 



!) For some other purpose I made a orting .•■ 1 rding to it color "Pigment- 

 ed or not." 



Z) Yule, U. :— An Introduction to the Theory of> 2nd 1 ■!., 1912. 



