GENETIC STUDIES ON THE SILKWORM 
H 28'i3 
64 
59 
43 
146 
H 34-1 '13 
257 
136 
544 
H 34--' 1 3 
239 
141 
510 
Totals 
2128 
1 1 03 
1053 
4284 
c) F a ex the cross 
plain 
yellow $9 x 
normal white . 
Norm. yel. 
Norm. wh. 
PI. yel. 
Totals 
H 1 3— i'i 3 
1 I 1 
80 
65 
2q6 
H I 3 -2'I 3 
219 
118 
1 '5 
452 
H I3~3' I 3 
121 
56 
62 
239 
H t3-4'i3 
141 
53 
5o 
244 
H i3-5''3 
(13 batches in 
2321 
aggregate) 
1 123 
1117 
4561 
H 30-['i3 
l82 
79 
73 
334 
H 30-2' 1 3 
249 
125 
1 12 
486 
H 30-3^3 
92 
V 
58 
207 
H 33-i'i3 
I71 
8i 
98 
35° 
H 3 3-2' 1 3 
I 3 I 
66 
64 
251 
H 33-3' 1 3 
27 
14 
14 
55 
Totals 
3755 
1852 
1828 
7435 
d) F 3 offspring 
derived from di heterozygous F 3 s. 
Norm. yel. 
Norm. wh. 
PI. yel. 
Totals 
C 30-i'i4 
55 
30 
28 
113 
C 33-i''4 
24 
21 
13 
58 
C 33-2'i4 
118 
58 
65 
24 E 
0 3 -i'i 4 
135 
76 
74 
285 
O 3-2*14 
163 
68 
86 
.317 
O 3"3'i4 
37 
20 
21 
78 
Totals 
532 
273 
287 
IO92 
Summary of the results from the mating PQyPqY x PQyPqY. 
Normal yellow Normal white Plain yellow Total 
Observed 7076 3581 3468 H I2 5 
Expected 7063 3531 353 t 141 25 
Ratio 2:1:1 
