GENETIC STUDIES OX THE SILKWORM 
lighter normal subtypes, but often not so in darker ones. 
When plain or pale-quail is crossed with either striped or moricaud or 
distinctly marked normal or quail, we are to expect in F a neither lighter 
normal nor lighter quail, provided that no subordinate (i. e. hypostatic) 
quail factors are contained in the epistatic parent. Such was actually the 
case with the lots A 74/15 A 76'! 5 (p. 177), A 279/15 (p. 182) etc. Several 
additional examples are given below. 
A 22'l4 Pale-quail x P 94^4 Normal (PO 3 ) 
I 
A 272' 1 5 Normal (PQ 3 ) 
176 x A 99/15 Pale-quail 
I 1 I 1 
A 375' 1 5 Normal (PQ 3 ) Quail (pQ 3 ) Plain (Pq) Pale-quail (pq) 
126 117 116 95 
O 76-2' 1 4 
Normal (PQ 3 ) Normal (PQ 4 ) 
126 145 
I I 
O 87^4 Normal (PQ 3 ) Plain (Pq) O 86' 14 Normal (PQ*) 
40 12 35 
I 
<j> x A 1 y' 14 Plain J 
A 163'! 5 Normal (PQ 3 ) Plain (Pq) 
3i 37 
H 20— 1 r i 3 Moricaud x X 6-i'ij Quail 
P45-i'i4 Moricaud Normal 
138 160 
1 i 1 n 
P 86' 1 4 Moricaud Moricaud-quail Normal Quail 
82 24 33 14 
A 22'i4 Pale-quail °. x % 
.1 . 1 
A 275^5 Moricaud Moricaud-quail 
66 70 
I 
A 99*15 Pale-quail £ x j 
