CONFORMITY TO TYPE 



251 



the mode of constitution of the proteidpgenous molecule and that 

 we are justified in assuming that the biophoric or living molecules 

 partake of similar constitution and that our conception of growth 

 is that which must be accepted, then, under these conditions, 

 growth, in a common medium, of biophoric molecules of two 

 orders, alike in general constitution but differing in certain of their 

 component chemical nuclei, must result in a certain amount of 

 interchange of those nuclei. Two sets of biophores may still be 

 traced in the blastomeres, in germ cells, and other cells derived 

 from the fertilized ovum; two sets each derived by direct physical 

 descent from the original paternal and maternal biophores and 



Pia. 101. Schema of mode of interaction of two biophoric molecules in a 

 common cell sap: A, of maternal; B, of paternal origin. 1, 2, 3, Allelomorphic 

 side chains, which, when liberated into the cell sap, will be attracted to the 

 biophore exercising the strongest affinity; 4, sidec hains common to both mole- 

 cules, built up indifferently into either. (Adami.) 



chromosomes, respectively, but the members of each of these, 

 while building up into their structure material assimilated by their 

 legitimate progenitors, attract for purposes of growth allelomorphic 

 matter formed similarly by the other. 



" By this method, apart wholly from what may be regarded as 

 external influences acting upon the germ cells during their existence 

 within the organism of the individual, it must come to pass that 

 through conjugation the biophores giving rise to a new individual 

 are not identical with those of either parent, and that each comes 

 to lose certain properties which belonged to the biophores of the 

 one and gain some belonging to the biophores of the other. If 



