GENETIC STUDIES OX THE SILKWORM 
P i9-2'i4 144 136 280 
P 25-i'i4 166 164 330 
P 25— 2 r I4 212 2l6 428 
Ex 2-8' 1 4 154 132 286 
Totals 905 893 1798 
d) Ouadruply heterozygous striped yellow (SPQYspqy) 22 
pale-quail white (spqyspqy ) J £. 
A 536'i5 
A 53/1 5 
Totals 
Striped yellow SPQY 
58 
80 
138 
Striped-quail yellow SpQY 
74 
85 
159 
Plain white sPqy 
65 
84* 
*49 
Pale-quail white spqy 
95* 
78 * 
173 
Totals 
292 
3 2 7 
619 
e) A triheterozygous striped yellow ( SFQYgspQyg) 2 x plain 
green ( sPqyGsPqyG) J . 
Striped yellow Normal green Total 
(SPQYG) (sPQyG) 
P I4'i4 161 155 316 
f) Triply heterozygous striped-quail yellow (Sp&Yspqy) 22 x 
pale-quail white (spqyspqy) I I . 
Str. qu. yel. Pale qu. wh. Totals 
(SpQY) (spqy) 
A 5 15'! 5 209 220 : 429 
A 5 i6 r i 5 225 207 '' 432 
Totals 434 427 861 
g) Diheterozygous striped-quail yellow (SpQYsptly) 2 2 x pale- 
quail white (spqyspqy) J J. 
Str. qu. yel. Quail wh. Totals 
(SpQY) (spQy) 
A 1 07' 1 5 166 180 346 
A 1 i3'i 5 137 109 246 
Totals 303 289 592 
