YOSHIMARO TANAKA 
215 
N 1 5— 1 ' 1 4. 
A 96' 1 5 
34 
21 
Light normal (PQ 1 ) 
18 
A i8'i4 Plain 
Plain 
175 
A 92' 1 5 Normal (PQ 1 ) Plain 
(4 batches) 95 797 
092^4 Quail (pQ 1 ) x A i8'i4 Plain 
A 250^5 
Plain 103 
A 37^15 
1 1 
Light normal (PQ 1 ) + plain (majority) Quail (pQ 1 ) 
356 106 
A 22' 1 4 Pale-quail x A i8'i4 normal (PQ 1 ) 
i 
A 255'^ hxtremely light normal n + plain - 
4'3 
A 392' 1 5 
Normal (lightest) and plain Quail (lightest) and 
pale-quail 
318 104 
There is, however, another way in which the intensity of the "eye-spots" 
is reduced : the spots may be lighter in the simplex condition of Q, factor 
than in its duplex condition. The following datum speaks for the assump- 
tion that 0,0, develops the "eye-spots" more intensely than Q,q. 
A 22' 1 4 Pale-quail (pq) x Light normal (PQ 1 ) 
I 
A 257 / i5 Plain (PpQiq) 240 25 (all) 
In this case the P gene is already present in the normal parent and the 
heterozygosis of this negative factor can not be agent that causes the "eye- 
spots" to fade ; the factor that plays this role must be Q, which is in hetero- 
zygous condition in the offspring. The heterozygotic effect of Q, on pattern 
development is, however, often inconspicuous, especially in normal and quails 
of the higher subtypes: the palliating action of P is also usually distinct in 
1 ) lhe majority of them had only two dark vertical lines in the place of the "eye-spots". 
2) These were destitute of even a trace of ''eye spots' - . 
