214 
GENETIC STUDIES ON THE SILKWORM 
(p. i4i),A477'i5 A 480-1 '15 Aty2-i'i$ h^g'^s A474''5 A478'i5(p. 143) 
etc. Even in cases in which light normal come to view, the percentage 
of the light normal to the plain is always lower than that of the light quail to 
the pale-quail : the phenomenon must also be caused by the peculiar action 
of P. Whether a plain is "specious" or not, may be conjectured by its 
pedigree or through further breeding. 
True or pure plain : 
M 37'] 4 Plain 
1 
Plain 
A 1 6' 1 5 151 
Ai/15 287 
I 
A 99/15 Pale-quail °. x £ 
I 
A 382'! 5 Plain n 
245 
1 
r _ 1 
Plain Pale-quail 
A 770' 1 5 206 . 69 
A 77 1 '15 262 84 
A 22^4 Pale-quail x A 18' 14 Plain 
I 
A 25 i'i 5 Plain 
316 
I l 
A39i'i5 Plain Pale-quail 
308 82 
Apparent or specious plain : 
H 44-i'i3 Striped x X 2-4'! 3 Normal (PQ 3 ) 
N 6' 1 4 Striped Normal (PQ 3 ) + light normal (PQ 1 ) 
182 189 
1 1 
Light normal (PQ 1 ) Plain 
1) There were 4 lightest normal. 
