5H 



The Ohio Naturalid. 



[Vol. XV, No. 7, 



Cancel similar constitutions and there are 9 combinations as 

 follows : 



a2b2 anbo n2b2 



a2bo a202 n2bo 



anb2 ano2 n202 



If X = 3and2x = 6; 



Chromosomes a ♦ 



b t 

 c « 



♦ 

 t 



T 



n 

 o 



P 



either male or 



The following types of gametes are possible, 

 female : 



a a a n a n 

 b b o b o b 

 c p c c p p 



Possible combinations = 64 



Cancel similar ones and there are left 27 types of chromosome 

 constitutions. 



n 

 o 

 c 



n 

 o 



P 



The following gametes are possible. 



a a a a n a a a n n n a n n n n 

 bbbobboobboobooo 

 c c p c c 1) ]) c p c c p p c ]3 p 

 d q d d d q d q d q d q q q d q 



In this case 256 types of matings are possible giving rise to SI 

 varieties of hereditary constitutions. 



