HEREDITY OF WILDNESS AND SAVAGENESS IN MICE 



41 



column of this table will be found the average grade for all 

 the tests and the average grade for the third, fourth, and fifth 

 tests for wildness and savageness of the first, second, and third 

 generation hybrids of Series A from the matings of tame fe- 

 males with wild males. In the second column are given the 



TABLE 27 



Summary of Results of First Generation Hybrids, Fi, of Series B,from Matings of Parental 

 Generation, Tame Female with Wild Male 



Average number tests, 

 Range of tests, 5 

 Average age in days: 

 First test, 36.26 

 Last test, 73.26 



30 Fib Males 

 and Females 



Average number tests, 

 Range of tests, 5 

 Average age in days : 

 First test, 37 

 Last test, 73.0 



6 Fib Males 



Average number tests. 

 Range of tests, 5 

 Average age in days: 

 First test, 39.36 

 Last test 80.0 



24 Fia females 



First test 



Average 1 and 2 . . 



Average all 



Average 3, 4 and 



5 



Last test 



5 

 First test 



Average 1 and 2 



Average all 



Average 3, 4 and 



5 



Last test 



5 

 First test 



Average 1 and 2. . 



Average all 



Average 3, 4 and 



5 



Last test 



Distribution of mice 

 in grades: 



Av. 



4.43 



4.13 



3.54 



3.14 

 3.0 



4.33 



3.91 



3.13 



2.61 

 3.0 



4.86 



4.18 



3.64 



3.25 

 3.27 



SAVAGENESS 



Distribution of mice 

 in grades: 



Av. 1 



4.2 



4.01 



2.8 



2.21 

 1.96 



3.66 



3.58 



2.33 



1.50 

 1.66 



4.72 



4.12 



3.08 



2.38 

 2.22 



9 5 



sexes which attained the higher average grade in these tests. 

 In the third and fourth columns are presented the like values 

 for Series B of the same matings, while in the fifth and sixth, 

 and the seventh and eighth columns are given these values 

 for Series A and Series B, respectively, from matings of wild 

 females with tame males. 



