EXERCISE 15 (Continued) 



Step 2. On the following diagrams plot the same contrasted characters 

 showing the effect of dominance upon the appearance of the progeny. 

 The Second Phase of Mendel's Law 



<? 



tral Generation. I I j 



t__ . Jr 



F2 Generation. -- - ---- j 



. 



' -- - ---- 



Step 3. On the following diagrams plot the behavior of certain matings 

 to test the purity of an apparent dominant character. 



Anoeetral Generation I f | 



v. .jr 



T 

 r~^ f i r i . 



Fl General! 



F2 Generation. 1 1 | 



DDDDDODCfcHDiOOOOOO 



58 



