86 



INBREEDING AND OUTBREEDING 



reach the possible number, and by specifying the location 

 in the series of the generation under discussion. * ' King 

 Melia Rioter 14th had less than 10 per cent, of the maxi- 

 mum number of ancestors in the 7th ancestral generation, 

 while in the same generation Blossom's Glorene had nearly 

 60 per cent. From these figures it is evident that King 

 Meha Rioter 14th is a much more inbred animal than 



100 



80 



2 60 



a 



® 



m 



<S 40 



20 



6 8 



Generations 



10 



12 



14 



^5' Fig. 23. — Graphs showing (a) the total inbreeding (heavy solid line) and (b) the rela- 

 tionship (heavy broken line) curves for the Jersey Bull, King Melia Rioter 14th. The 

 high order of the inbreeding and relationship between the sire and dam in this case is evident 

 by comparison with the lighter lines, which give the maximum values for continued brother 

 X ^siste r and^parentlXioff spring breeding. g (AftertPearl.) 



Blossom's Glorene. A clearer demonstration of the mat- 

 ter, however, is found in Fig. 23, where the curve of the 

 total inbreeding of King Melia Rioter 14th plotted from 

 the figures just cited is compared with the curve of maxi- 

 mum values for continued brother x sister and parent x 

 offspring matings. 



The Coefficient of Relationship, K, might better be 

 called the Coefficient of Cross-Relationship to distinguish 



