The Making of Species 



the other exclusively, but always exhibit some 

 blending of the characters of both, which is, 

 after all, what might have been expected, since 

 well-defined species usually differ in more than 

 one character. 



Thus, the cross between the Amherst and gold 

 pheasants chiefly resembles the latter, but has 

 the ruff white as in the Amherst, while the crest, 

 though in form it resembles that of the gold 

 species, is not yellow as in that species, nor red 

 as in the Amherst, but of an intermediate tint, 

 brilliant orange. 



The mule between the horse and ass, as all 

 know, combines the shapes of the two parents, 

 though in colour it follows the horse rather than 

 the ass. 



When two remote species, one or each of 

 which possesses some distinctive structural 

 peculiarity, are crossed, the hybrid does not 

 inherit such points. The guinea-fowl has a 

 helmet, and a pair of wattles on the upper 

 jaw ; the common fowl a comb, and a pair of 

 wattles on the lower jaw ; but in the hybrid no 

 comb, helmet, or wattles are present. 



The Muscovy drake has a bare red eye-patch, 

 and the male of the common duck curled middle- 

 tail feathers ; in the hybrid neither of these 

 peculiarities is reproduced. 



In a cross between nearly-related forms, the 

 peculiarity of one species may be reproduced in 



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