8 



THE NEXT GENERATION 



changed the order. They chose a pure-bred white father and 

 a pure-bred black mother. Again they waited for results, 

 and again the chicks told the same story. Not a black one 

 or a white one was among them ; all were as blue as the 

 first group. 



From then until now the same experiment has always 

 produced the same result. Whenever a black Andalusian 



fowl and a white Anda- 

 lusian fowl have become 

 parents, their chicks in the 

 first generation have always 

 grown up to be blue Anda- 

 lusian fowls. They are a 

 mixture and not pure-bred 

 like their parents. Such a 

 mixture is always called 

 hybrid. Remember this 

 word and its meaning. It 

 is the opposite of pure-bred. 

 All animals are hybrid un- 

 less both parents are pure- 

 bred of the same kind. 



The next step in this 

 investigation was to gather 

 facts about the descendants of the hybrids. Would they be 

 blue like their parents or black like one grandparent or white 

 like the other grandparent ? 



In making this experiment two blue ones were chosen as 

 ancestors. 



The illustration shows what happened in the next genera- 

 tion. One chick was white like one grandparent ; one was black 

 like the other grandparent; two were blue like their parents. 



BLUE ANDALUSIAN "COCK 



