220 
GENETIC STUDIES ON THE SILKWORM 
results may be expected for the other markings, i. e. striped, normal and quail. 
As has been stated in a foregoing page, a pQ 1 animal often looks like 
a plain (Pq) but it is only a "specious" plain; a pQ, 1 individual also may 
sometimcs be mistaken for a pale-quail (pq), both owing to the fluctuation 
before spoken of. The offspring ought to contain some light normal and 
light quails, when such a specious plain or a specious pale-quail is crossed 
with any other marking types irrespective of the presence or absence of the 
Q, 1 factor in the latter. 
H i— i'i 3 Striped x Plain (Araya) 
P i -2' 1 4 SPO sPQ 
142 135 
P 75-2' 14 SPO sPq 
102 37 
I 
A 22'i4 Pale-qnail 2 x J 
A 279' 1 5 SPQ sPq 
•'35 '67 
I 
A 99' 1 5 Pale-quail 2 x 
I 
sPQ 1 + sPq spO 1 + spq 
A43 |/ '5 55 7§ 
A 432'i 5 '°7 96 
The fact described in the present and just preceding paragraphs may be 
expressed by diagrams as follows : 
Taking the case of crossing with pQ normal ; 
Distinct normal (PQ :i q) x specious pale-quail (pqQ 1 ) 
or . 
Distinct normal (P0 3 0 1 ) x true pale-quail (pq) 
I 
Fj Distinct normal (PpQ 3 Q 1 q) 
i 
I i i 1 i i 1 
F, Distinct norm. Distinct qu. Light norm. Light qu. Plain Pal. qu. 
(PQ 3 ) (pQ 3 ) (PQ 1 ) (pQ 1 ) (Pq) (pq) 
36 12 9 3 3' 
