ii6 



GENETICS 



AB, Ab, aB or ab from the other parent; and so of each 

 of the other gametes of the first parent. The result is to 

 give a set of i6 combinations of gametes (some of which 



Parent! 



Germ Cell 



Fi 



Germ Cells 

 from Fl 



D 



R 



Figure 29. Diagram to illustrate the results of mating dominant 

 and recessive parents (D and R) that differ in two pairs of auto- 

 somes, AA and BB, aa and bb. Fi all AaBb. 



are alike, however, as will be seen). It is not necessary to 

 carry further in our diagram the outlines of the chromo- 

 somes. The 16 combinations formed are those shown in the 

 following table 2 : 



