1 78 
GENETIC STUDIES ON THE SILKWORM 
Pale-qu. yel. spqY 6 * 6 * 2 14 
Pale-qu. wh. spqy 15* 22* 22 59 
Totals 186 409 230 825 
e) F 3 ex the cross plain white (sPqy) x striped-quail yellow (SpöY). 
A 532'i5 
A 533'i5 
Totals 
Str. yel. 
102 
132 
234 
Str. wh. 
1 1 
12 
23 
Light norm. yel. 
15 8 
8 
16 
Light norm. wh. 
33 
39 
72 
Str. qu. yel. 
37 
52 
89 
Str. qu. wh. 
3 
5 
Light qu. yel. 0 
3 
7 
10 
Light qu wh. 
7 
12 
'9 
Totals 
204 
264 
468 
f) F 3 ex the cross striped-quail yellow (SpftY) X quail white (spQ,y)- 
Str. qu. yel. Str. qu. wh. Qu. yel. Qu. wh. Total 
A ioc/15 212 16 16 40 284 
g) F a ex the cross pale-quail white (spqy) x striped-quail yellow (SpQY). 
Str. qu. yel. Str. qu. wh. Pale qu. yel. Pale qu. wh. Totals 
A5ii'i5 225 21 15 * 47 ' 3o8 
A 5 1 2 r i 5 148 14 15 * 50 " 227 
Totals 373 35 30 97 535 
Grand totals of the results from the cross SYsy x SYsy. 
Striped Striped Non-striped Non-striped Total 
yellow (SY) white (Sy) yellow (sY) white (sy) 
Observed 10958 1075 1 101 3017 16151 
Expect, on the „ ^ 
3:1:1 : 3 basis 11104 1009 1009 3028 50 
(11 : 1 : 1 : 3) 
10959 1 1 54 ]1 54 2884 1615: 
(19 : 2 : 2 : 5) 
On 5:2:2:5 
basis 
1) The appearance of light normal and quail instead of plain and pale-quail will he discussed 
in later pages. 
