MENDEL'S TWO LAWS 



61 





w 





if w 

 ^S7 



/; 



■^ft.* 



Fig. 19. — Cross between s])lashed white and black fowls, giving in F ^ 

 blue Andalusian. In F., there is one splashed white, to two blues, to one 

 black. 



In the two cases just given the character of the 

 hybrid is intermediate between the two contrasted 

 characters of the parents ; but in the seven pairs of 

 contrasted characters studied bv INIendel the char- 

 acter of the hybrid is hke that of one of the parents. 

 This character is said to be dominant. Two of Men- 

 del's cases will serve to illustrate this relation. If a 

 tall pea is crossed to a short pea the offspring are 

 tall [fig. 21), i.e., not intermediate in height. If 



