HEREDITY OF WILDNESS AND SAVAGENESS IN ^NIICE 



21 



The averages for the females of Foa and Fsa are higher In 

 grade than those of the males in every instance except the 

 averages for the first tests for wildness and savageness in both 

 generations and the average of the first and second tests for 

 savageness in the Fsa. The modal grades in these two genera- 

 tions range as follows: for males in wildness and savageness 

 respectively; F2a, 2-4 and 0-4; Fsa, 3-4 and 0-5 ; for the females, 

 F2a, 2-4 and 2-4; Fsa, 3-4 and 3-5. 



TABLE 9 

 Siimviary of Results for First Generation Hybrids, Fi, of Series B 



Average number tests, 

 Range of tests, 2-5 

 Average age in days: 



First 

 test, 36.76 



Last test, 77.09 



102 Fib 



Males 



Average number tests. 

 Range of tests, 3-5 

 Average age in days: 



First 

 test, 37.43 



Last test, 72.08 



99 Fib 



Females 



4.49 



First test 



Average 1 and 2. . . . 



Average all 



(96) 



Average 3, 4 and 5 . 



Last test 



4.77 



First test 



Average 1 and 2. . . . 



Average all 



Average 3, 4 and 5 . 

 Last test 



WILDNESS 



Di^ 



tribulion of mice 

 in grades: 



Av. 



3.57 



3.56 



3.30 



3.13 

 3.04 



4.02 



3.93 



3 .73 



3.59 

 3.71 



SAVAGENESS 



Distribution of mice 

 in grades: 



Av. 



3.96 



3.78 



3.07 



2.53 

 2.50 



4.10 



3.84 



3.30 



2.91 

 2.65 



In the three generations of Series B (tables 9, 10 and 11), the 

 females attained higher grades in every instance except the 

 average of the first tests for savageness In Fsb. The modal 

 grades of the averages of this series likewise indicate that the 

 females are generally more wild and savage than the males. 



From the results as shown in table 3 it seems fairly clear 

 that the inheritance of wildness and savageness in mice is 

 Mendelian of the "blending" or multiple factor type. The 

 first section of this table shows that the wildness and savageness 

 of the Fi's vary about the intermediate grade 3 with some 



