HEREDITY 



intensified in the son, black having been re- 

 ceived through the albino parent as a latent 

 factor, which became fully active in the son. 

 The excluded albinism, recessive in the son and 

 his brothers and sisters, all seven of which 

 were similar in character, reappeared among 

 the grandchildren, as, for example, in the one 

 shown in Fig. 46, which was short-haired. 

 Other F 2 offspring were long-haired, some of 

 them being albinos, others being pigmented. 

 But the size and ear-length of the son were 

 intermediate between the sizes and ear-lengths 

 of his parents, and this intermediate character 

 persisted without apparent segregation among 

 the F 2 offspring. The animals in the pictures 

 are unfortunately not all shown on the same 

 scale, but the relative ear-lengths are sufficiently 

 clear. 



A Mendelian interpretation of blending in- 

 heritance, illustrated in the inheritance of skull- 

 size and ear-length among rabbits, has been sug- 

 gested by my colleague Dr. East, and by others, 

 an interpretation in which Mendelian dominance 

 is indeed wanting but segregation nevertheless 

 occurs, yet not of a simple kind, involving one 



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