148 
GENETIC STUDIES ON THE SILKWORM 
Striped white 2 x P 86' 14 moricaud yellow £ 
(Ssmmyy) (ssMmYy) 
r, ' i 1 I i i i ~l 
Ä 247'i 5 Str. mor. Str. mor. Str. Str. Mor. Mor. Norm. Norm. 
yel. vvh. yel. wh. yel. wh. yel. wh. 
(SMY) (SMy) (SmY) (Smy) (sMY) (sMy) (smY) (smy) 
66 22 25 55 65 12 16 66 5 
2 X A 99' i 5 pale-quail white £ 
I I 
Str. vvh. Mor. yel. 
(Smy) (sMY) 
A 548^5 287 212 
A 252'] 5 quail white 2 x A 43^1 5 striped-moricaud vellow J 
(smy) (SMY) 
A 541 '15 Str. yel. (SmY) Mor. yel. (sMY) 
121 127 
A 1 Sß'i 5 plain white 2 x A43'(5 striped-moricaud yellow J 
(smy) (SMY) 
Str. yel. (SmY) Mor. yel. (sMY) 
A 542'! 5 211 180 
A 255'! 5 plain white 2 x A 43^5 striped-moricaud yellow £ 
Str. yel. Mor. yel. 
A 545'i5 190 213 
P 86'l4 moricaud yellow 2) x P 77^4 striped white 
(ssMmYy) (Ssmmyy) 
I 1 1 I 
Str. mor. yel. Str. vvh. Mor. yel. Nor. wh. 
(SsMmYy) (Ssmmyy) (ssMmYy) (ssmmyy) 
A 246' 15 113 126 102 117 
A 99' 1 5 pale-quail white (ssmmyy) 22 x 
Str. yel. Str. wh. Mor. yel. Mor. wh. 
(SsmmYy) (Ssmmyy) (ssMmYy) (ssMmyy) 
1) The phenotypic proportion of this family is explicable on the basis of M-Y coupling (3:1:1:3). 
2) As to the complete coupling of M and Y in the female hybrid, see the next chapter. 
