THE GERM -PLASM THEORY 



303 



and one-fourth green. This proved that the seeds 

 of the first generation (Fi), althougli yellow, si ill 

 possessed within them the factor for grtH'iiness in a 

 latent condition. Green was therefore called a re- 



Fz 







F3 



Fig. 81. — Diagram to illustrate Mondel's law of aogregution. Individ- 

 uals (zygotes) are represented by suptTiinposed circles, \vho.se colors 

 stand for the factors involved. Gamctrs (Kcrni cells) are repreaeutcd 

 by single circles. {From Morgan, 1U14-) 



cessive character and yellow a dominant character. 

 As a result of breeding the (F2) secumi generation it 

 was found that all of the green seeds produced plants 

 which bore green seeds; that is, these plants were 

 pure green and "homozygous" as regards color; 

 whereas the plants which bore yellow seeds couKl l)e 



