YOSHIMARO TAMARA 2 ig 
have now to be considered. Before proceeding further, however, we shall 
examine the interrelation of various quail or normal subtypes. 
P 94-i'i4 Normal (PO 4 ) ? x N i 5—3' 1 4 Normal (PQi) J 
I 
A 1 50' 15 Normal (PQ*) 
P84-2'i4 Normal (PO 1 ) x P94-i'i4 Normal (PO 4 ) 
I 
A I5i'i5 Normal (PQ 3 " 4 ) 
228 
_J ■ 
A 441*15 Normal (PQ 3 " 4 ) Normal (PQ 1 ) Plain (Pq) 
263 37 45 
P87'i4 Normal (PO 1 ) ? x A 21/14 Quail (pQ») J 
1 
A 193' 1 5 All normal (PQ 3 ) 
305 
Quail (pQ»)$ x O 88' 14 Normal (PpQ 1 ) J 
I V:' 
Normal (PQ 3 ) Quail (pO 3 ) 
A 209' 1 5 121 1 27 
It is evident that a higher subtype is epistatic to a lower one, i. e. 
q a a a • 
so that the occurrence of such forms as Q/'Q/q/q,', Q. Q, qq, or any other combi- 
nations of subordinate factors must be possible. Consequently there may 
exist in the striped, moricaud, normal and quail types various strains which 
are different from one another as regards the quail factors involved. Now a 
moricaud of the genetic constitution MMQ, G 6 0,' ^ s to yield* when crossed 
with a pale-quail, F„ animals of such phenotypes as moricaud, moricaud-quail, 
light normal, light quail, plain and pale-quail, if Q l is not completely coupled 
with M. This was, in fact, the result in the majority of such crossings. On 
the other hand, if a moricaud of the constitution MMPPQ/'Q.'qq ' s crossed with 
a pale quail, F.^ zygotic series will be represented by moricaud, moricaud- 
quail, plain and pale-quail, but will contain neither light normal nor light quail. 
This was realised in A 473'! 5 fp. 143) and some other families. Similar 
