STUDIES ON THE GENETICS OF FLOWER-COLOURS, ETC. 
109 
Table VI, A. 
.Fj-generation (1916, 1917, 1920). 
iq -parent. 
No. of the F~ -offspring 
Totals. 
Magenta 
Orange 
White 
Red 
W T hite-II x orange, No. 1 
35 
13 
17 
65 
* 0 
99 99 99 99 U 
81 
20 
34 
It 
136 
Orange x white-II 
96 
50 
43 
189 
Totals 
212 
83 
94 
1 
390 
T, J 
219-37+9-8 
73T2-+-7-7 
97'50+86 
0 
390ft 
Expected j 
195-00±9-9 
97-50±8-6 
97-50±8-6 
0 
390fff 
As we see from tlie above Table, the actual results in F, agree with 
the theoretical, either on 2:1:1 or 9:3:4 ratio, just as in the Cross II, 
though somewhat better on the latter basis, and the question which possibility 
will here occur in reality was decided by raising the 14-generation ex white- 
II X orange, No. 1 and orange x wliite-II cited in the Table VI, A. The results 
of this cultivation are shown in Table VI B (s. p. 110) : — 
As we see in this Table magenta No. 2 has produced 75 magentas and 
42 reds, and yet it is to be regarded as having the constitution CCBBBB 
(s. Table VIII, No. 23; discussion in Chapter “ Mutations, etc.,” Ill, p. 127)* 
In respect to the fact that magenta No. 6 should be considered to be CcBvBb 
s. Table VIII, No. 24, and discussion, p. 129.—The orange No. 2 is 
considered to be CCrvbb , and the orange Nos. 4 and 5 to be Ccvvbb 
(s. Table VIII, Nos. 25, 26, and 27 ; discussions, in “ Mutations, etc.” I). 
White No. 2 composed of 4 plants has produced together besides whites some 
magentas and reds ; each of these 4 is despite this fact regarded to be ccvvbb 
(Table VIII, No. 28 ; discussion in Chapter “ Mutations, etc.,” III). From the 
Table VI as well as from what was just stated the following conclusion 
may be drawn:—we have in 24 homozygous magentas (CCBBBB): those 
segregating into 3 magentas and 1 orange (CCBvBb) : those segiega- 
ting into 3 magentas and 1 white (CcBBBB) : those segregating into 9 
magentas, 3 oranges, and 4 whites ( CcBvBb), in the îatio 3.9.7.7, 
t This 1 red is not taken here into consideration ; s. the foot-note p. 110. 
ft On 9:3:4 basis. 
Uï On 2:1:1 basis. 
