1 66 
GENETIC STUDIES ON THE SILKWORM 
Further data were obtained in 1913, 1914 and 1915. 
MYmy x MYmy 
a) F 2 cx the cross normal white (mPQymPQy) ^ x 
moricaud yellow (MPQYMPftY) J J . 
Mor. yel. 
Mor. wh. 
Norm. yel. 
Norm. wh. 
Total 
(MPQY) 
(MPQy) 
(mPQY) 
(mPQy) 
H i9-i'i3 ]) 
141 
'9 
14 
3i 
205 
H 1 9- 4' 1 3 
(6 batches) 
uiS 
92 
94 
316 
1 61 7 
H 2 1 - i'i 3 
220 
14 
18 
56 
308 
n 21-2 1 j 
t nK 
i Uo 
1 A 
1 4 
1 0 
29 
1 f\ t 
101 
I-T 9 1 _->' t 3 
11 21 3 1 j 
209 
2 4 
35 
73 
4JI 
H 2 1 -4' 1 3 
113 
14 
1 1 
37 
'75 
H 21-5*13 
57 
16 
1 2 
36 
1 2 r 
H 2i-6'i 3 
188 
7 
13 
55 
263 
H 2 1 -7' 1 3 
130 
16 
1 1 
4 5 
202 
H 2i-8'i3 
(14 batches) 
2954 
253 
257 
853 
43'7 
H 2 1 -9' 1 3 
(6 batches) 
»33 
97 
96 
264 
1590 
Totals 
6428 
566 
57' 
'795 
9360 
b) F a ex the cross moricaud yellow (MPÖYMPQY) ?-+ x 
normal white (mPQymPüy) . 
Mor. yel. 
(MPQY) 
Mor. wh. 
(MPQy) 
Norm. yel. 
(mPQY) 
Norm. wh. 
(mPQy) 
Totals 
H 20— 1 ' 
'3 
163 
'3 
'5 
55 
246 
H 20-2' 
13 
120 
7 
9 
3i 
167 
H 22-1' 
'3 
{ 54 
16 
7 
47 
224 
H 22—2' 
13 
191 
16 
20 
40 
267 
H 22-3' 
13 
123 
1 1 
13 
33 
185 
Totals 
75 1 
63 
64 
21 [ 
1089 
Data obtained in 1914. 
F 2 ex the cross plain or normal white 9^ x moricaud yellow J J 
1) As to the alteration of suffixes see p. 130. 
