INHERITED SEED-CHARACTERS 63 



tion, a family consisting in every case of plants with 

 yellow, and plants with green first two leaves. 



To return to common parlance. Either five or 

 six of the yellow seeds constituting the second hybrid 

 generation were sown, and the colours of the seeds 

 (containing the third hybrid generation) borne on 

 the plants raised are given on the same line in the 

 Table, to the right of the record of the seeds of the 

 second hybrid generation. Thus, five of the yellow 

 seeds borne on plant No. 1 were sown and gave rise 

 to five plants numbered 1*1, 1*2, 1*3, 1*4 and 1*5, 

 all of which happened to produce both yellow and 

 green seeds. In other words, all of the yellow-seed 

 leaved plantlets contained within the seeds sown, 

 were hybrids. But of the five yellow seeds of 

 Plant No. 2 that were sown, two — namely, those which 

 produced plants numbered 2*1 and 2*3 contained 

 pure dominant plantlets because the plants raised 

 from them produced only yellow seeds. The import- 

 ant point to notice is that every grown plant of the 

 first hybrid generation produces both yellow and 

 green seeds containing the second hybrid generation 

 in embryo {see the first column in the Table) ; i.e. 

 segregation or reappearance of the parental charac- 

 teristics occurs in every family in the second hybrid 

 generation. On the other hand, some of the grown 

 plants of the second hybrid generation — namely, the 

 hybrid ones — produce both yellow and green seeds 

 (containing the third hybrid generation in embryo), 

 whilst others, the pure dominants, produce yellow 

 seeds only. 



