YOSHIMARO TANAKA 
157 
6 PQyPqY x 1 PQYPqY 6, 
i PQYPqY x 6 PQyPqY 6} 
1 PQYPqY x 1 PQYPqY 1, 
1 PQYPQy x 1 PQYPqY 1 
; PQYPqY x 1 PQYPQy 1 
We should expect to meet with the classes I, II, III, IV respectively 36, 13, 
13, and 2 times in 64 families. The actual counts are 
Other cases Totals 
.13 giving rise to Class III 
.Sfivine rise to Class IV 
Cases included in 
Table I 
Class I 
Class II 
Class III 
Class IV 
14 
6 
4 
2 
Expect. 
14.6 
5.3 
5-3 
0.8 
B) Frequency of the different families in the offspring of normal white 
in the Class I lot of any generation. 
Male Female 
3 PQyPQy x 3 PQyPQy 91 
1 PQyPqy 3 >- 15 giving rise to Class V 
3 PQyPQy 3) 
1 PQyPqy 1 giving rise to Class VI 
3 PQyPQy 
. PQyPqy 
i PQyPqy 
Actual results : 
X 
X 
X 
X 
Cases included in Other cases 
Table I 
Totals 
Expected 
Class V 4 3 7 7-5 
Class VI 1 o 1 0.5 
C) Frequency of the different families in the offspring of plain yellow 
in the Class I lot of any generation. 
Male 
Female 
3 PqYPqY 
X 
3 PqYPqY 9 
3 PqYPqY 
X 
1 PqYPqy 3 
I PqYPqy 
X 
3 PqYPqY 3 
I PqYPqy 
X 
1 PqYPqp 1 
