YOSHIMARO TANAKA 
'5 1 
i) Correlation of Quail Factor and Yellow 
Cocoon Character. 
In my previous papers I regarded the "normal" pattern as a unit character 
and denoted it by the symbol "N. This was, however, incorrect ; the normal 
is in reality a compound character brought about by the combination of P 
(plain) and Q, (quail) factors as demonstrated above. On the other hand, the 
correlation of the normal marking (PQ,) and the yellow colour (Y) was, as the 
following data show, the association of Q, and Y, the p factor being transmit- 
ted independently {cf. Chapter V). 
A. Q,-Y Repulsion. 
The cross between the normal white (PPQQyy) and the plain yellow 
(PPqqYY) gives rise to normal yellow ¥ x s (PQypqY) which produced in F 2 
generation three zygotic forms, — normal yellow, normal white and plain 
yellow in the ratio 2 : I : I 
PöyPqY x PayPqY 
a) 
Offspring of heterozygous normal yellows whose hi 
story 
is not exactly known. 
Normal yellow Normal white 
Plain yellow 
Totals 
N 4 ir i2 
168 
77 
81 
326 
N 4^12 
'54 
7^ 
62 
288 
N 4 3/ i2 
136 
86 
68 
290 
H 2'12 
80 
3° 
28 
138 
H 5 ' i 2 
'^3 
88 
6r 
^ y -> 
Totals 
65 1 
353 
300 
■3'4 
b) 
F., ex the cross normal 
white ?9 x 
plain yellow 
ss 
Norm. yel. 
Norm. wh. 
PI. yel. 
Totals 
H 
i2-i'i3 178 
82 
87 
347 
H 
I 2-2' I 3 136 
S3 
84 
303 
H 
1 2-3' 1 3 38 
16 
1 1 
65 
II 
t2-4'i3 159 
63 
64 
286 
H i2-5'i3 1057 
(7 batches n in aggregate) 
539 
487 
2083 
1) The "batch" is a group of eggs laid by 
a single female. 
