42 R. A. EMERSON 
A single F. sun red plant (group 2, table 10) gave, from self-pollination, 
23 sun red and 9 dilute sun red F3; plants, a deviation from expectation of 
Ise WA 
A single F. sun red plant (group 3, table 10), when crossed with green 
VIc, gave 50 sun reds and 43 greens where equality was expected, a devia- 
tion of 3.5 + 3.3. 
By way of summary of the behavior of F. sun red plants, it must be . 
noted that, while four sorts of behavior were expected, only three sorts 
were observed. While any nine such F2 plants should be distributed with 
respect to the four kinds of behavior in the relation 1:2:2:4, the observed 
relation was 0:1:1:7. While mathematically this is not a very bad fit 
considering the small numbers involved, P equaling 0.24, it is inadequate 
for a determination of the possible genotypes of F. sun red plants. 
Fortunately, certain crosses considered later (page 51) involving the sun 
red type, with presumably the same genetic constitutions as the Fz sun 
reds of this cross, afford a more nearly adequate test of the matter. 
Later behavior of F', dilute purple I1[a.— F 2 dilute purple plants should 
present the same types of behavior in F; as F. sun reds, but, of course, 
with somewhat different color types appearing, as follows: 
F; color types 
Jee nova Dilute | Dilute | 
purple sun red Vib ae 
Ia Va ne 
PSA AM DOTA Lech eves teria kates ae ek eater Seog eat Ns Mears || ns G's oro 
DAMAGE EP lil one ac Warde oe, Recs cant eos 3 1 ie, a 
De SAL OLD REALL Ap esrb clot teehee g cae hapa oe ieee ae payee ease rere il 
AS AN AONE GEO Use eres cone Seana ener Tee TS Te leat ae 9 3 4 
The available data from this test are given in table 11 (page 129). Four 
I’, dilute purples (group 1) yielded the three color types expected, dilute 
purple, dilute sun red, and green, in the numbers shown below. There 
is considerably more than an even chance that the deviations from expecta- 
tion may be due to errors of random sampling, P equaling 0.58. The 
comparison follows: 
