282 Evolution and Adaptation 
The seeds were sown, and in turn yielded plants which when 
self-fertilized gave four kinds of seeds (which frequently all 
appeared in the same pod). Thus 556 seeds were produced 
by 15 plants, having the following characters : — 
AB 315 round and yellow 
Aé i1o1 angular and yellow 
aB 108 round and green 
ab 32 angular and green 
These figures stand almost in the relation of 9: 3:3:1. 
These seeds were sown again in the following year and 
gave :— 
From the round yellow seeds : — 
AB 38 round and yellow seeds 
ABbé 65 round yellow and green seeds 
AaB 60 round yellow and angular yellow seeds 
AaB 138 round yellow and green, angular yellow 
and green seeds 
From the angular yellow seeds : — 
aB 28 angular yellow seeds 
aBb 68 angular yellow and green seeds 
From the round green seeds : — 
Ab 35 round green seeds 
Aab 67 round angular seeds 
From the angular green seeds : — 
ab 30 angular green seeds 
Thus there were 9 different kinds of seeds produced. 
There had been separated out at this time 38 individuals 
like the parent seed plant, AB, and 30 like the parent 
pollen plant, 2. Since these had come from similar seeds 
of the preceding generation they may be looked upon as 
pure at this time. The forms 4é and a@B are also constant 
