FLOWER AND SEED COLOUR IN LUPINUS 307 

Blue flower colour, earth-brown seed colour = RRBBVVFF 
Tinged blue » » » = RRBBV Vfi . 
Bluish red » » » = RRBBvvFF 
Tinged red » - » » = RRBBovovff 
Violet Miter, rust-brown » = RRbbVVFF 
<2 » »? » == RRbbVVjJ) not yet 
2 obtained. 
Purered > > > — RRbbvvFF 
( ? » »? yey = RRbbvoff) not yet 
obtained. 
White +9 white » —rrBBVVFF 
» ÿ » » » — rrbbVVFF etc. 
THE RESULTS OF THE SEGREGATIONS. 
The detailed results of the segregations and the numerical rela- 
tions within the different families are tabulated in tables 7—26, pp. 
345—362. The numbers of individuals of the different families are 
rather small, as seen, and therefore it is not possible to decide 
upon the. question whether within the families belonging to 
the same type of segregation small but significant differences 
are present, as for instance in the degree of linkage etc.; only the 
totals of the families with the same mode of segregation have been 
considered here. When treating the proportions between the F;- 
families of different types of segregation only the relation between 
the constant dominants and the heterozygous families have been 
determined; the constant recessives have not been considered. 
Thus the proportions expected have been referred to the number 3 
(1 + 2) instead of 4 (1 + 2 + 1) in the case of simple segregation. 
In the case of di-hybrid segregations the proportions have not been 
calculated from the constant 16, but each family from double domi- 
nant and simple recessive mother plants have been calculated from 
the numbers 1+ 2 +2 + 4 and 1 +2 respectively. It should also 
- be mentioned that F.,-families with less than 20 individuals have not, 
_ been considered. 
It is to be expected, according to the genetical formulae, that all 
crosses between blue colour on the one side and tinged blue, bluish 
red, violet and the whites constituted rrBBVVFF on the other should 
give simple segregation, as each of these latter ones differ genotypically 
from the blue ones only by the absence of one factor. The same type 
of segregation should result, and for the same reason, when the earth- 
