Inheritance in the Higher Plants 



103 



Without going into the theory of this phenomenon it is 

 apparent that in the first case red pericaq) and red cob 



Fig. 44. — Red cob and red pericarp antagonistic in inheritance. (Photo 

 by Emerson.) F2 generation shown. Ears i and 4, like parents, are pure types. 

 Ears 2 and 3 are heterozygous. 



were not produced by a single factor in the usual sense, but 

 by two individual factors coupled in their inheritance. In 

 the second cross the two factors were not coupled; in fact 



