1(1 
Ri search Bulletin _\ o. 
hybrid, 
follows 
and therefore should give different results in F„ as 
gives in F- 
red only, 
rod only, 
red only, 
red only, 
red only, 
red only, 
red only. 
63 red : 1 white, 
red only, 
red only, 
red only. 
15 red : 1 white, 
red only, 
red only, 
red only. 
15 red : 1 white, 
red only, 
red only, 
red only. 
15 red : 1 white, 
red only. 
3 red : 1 white, 
red only. 
3 red : 1 white, 
red only. 
3 red : 1 white. 
Collecting the statistics, we find that the 63 red plants of the 
trihybrid minimum of 04 in F 2 should give in F... when selfed, 37 
breeding true to red. 6 throwing reds and whites in the ratio of 
3:1, 12 throwing reds and whites in the ratio of 15:1, and 8 
throwing reds and whites in the ratio of 63 : 1. From these data 
one can calculate the most probable result in the experiment 
where 78 plants were followed to the F 3 generation. It is as 
follows : 
PI dec 
i 
L. 
i j? i? j? i* i* /> 
i W Q CSC 
2 
9 7? r 7? 7? 7? 7? 
— It 1 l j IV oil , } J\ oil g 
Pin ce 
O 
o. 
— iljil llt 2 l oil gilg 
Plncc 
A 
-t. 
9 7? 7? 7? 7? 7? r 
— il-^l y l\ .,il .,7l a 
Plnec 
L 1<1 SS 
0. 
i 7? 4> 7> 4. 7? 7? 
-k It-J -,it 2 V oil oilg 
PI nee 
o. 
1 7? 7? 7J v J? 1* 
•± il 1 1\ 1 il „ / oil •; / Q 
PI nee 
i . 
1 7? i- 7? 7? 7> / 
-± ilj/ jil oil oil 3' 3 
PI nee 
8. 
8 7? r 7? r 7? r 
O il jil 0' oil 3/ 0 
Class 
9 
1 7? 7? A* 7? r r 
X -il-^Jl j Jl 9 Zl 9 / g/ „ 
Class 
10. 
2 R r R R r r ° 
Class 
11. 
Class 
12. 
4 7? r 7? r r r ° 
Class 
13. 
1 r /■ h* T? 7? 7^ 
-L 1^1 -^-Ll o O -il / 1 
Class 
14. 
2 r r ft r 7? /? 
Class 
15. 
2 r r 72 7? R r 
Class 
16 
4. i- r ft r R r 
t: / j.' jjII 0' oilg/ 3 
Class 
1 7 
1 7? T> v> 7? J* 
± i^lill' 0/ oilgil .. 
plo CO 
JLO. 
9 7? 1* 4' o- 7? 7? 
il-^ 0 I 9 il gil 0 
Class 
19. 
] 1 2 2- ll 3 3 
Class 
20. 
Class 
21. 
1 R 1 R 1 r 2 r 2 r s r 3 
Class 
22. 
2 R x r x r 2 r 2 r z r z 
Class 
23. 
1 r x i\R 2 R 2 rJ\, 
Class 
24. 
2 r 1 r i JK 1 r B r a r i 
Class 
25. 
1 i\r x r 2 r 2 RJi .. 
Class 
26. 
2 i\r x r 2 r 2 R.j' ?> 
Type 
Per cent 
Actual 
result 
Plants breeding true to red . . 
Plants giving 3 red : 1 white 
Plants giving 15 red : 1 white. 
Plants giving 63 red : 1 white. 
58.8 
50 
46 
9 5 
8 
7 
19.0 
15 
15 
12.7 
5 
10 
Most 
probable 
expectancy 
