I '20 



GENETIC STOCKS AND BREEDING METHODS 



sister or parent x offspring, since less stringent systems of mating sometimes have been 

 expedient. Thus, in the case of rabbits, the inbreeding can be expressed either as the 

 number of generations of brother x sister or parent x offspring matings or in terms 

 of the inbreeding coefficient (F) . The listings are prepared in this manner. As for 

 the other species already mentioned, it is recommended that the Committee on Stan- 

 dardized Nomenclature extend its coverage to include the rabbits. Some changes 

 have been made in symbols (according to the rules for mice), and concurrence was 

 obtained from the contributor for the acceptance of such changes. The abbreviations 

 in the contributor list, as in the case of previous lists, were checked to avoid duplication. 



Table 39 

 Stocks of rabbits of genetic interest 



Name or 

 Symbol 



Synonym(s) 



Remarks 



BLOOD 

 GROUP 

 GENES 

 STOCKS 



origin: C. Cohen, by selection of identified blood group genes. 

 charac: One stock is segregating for Hg A , the other four stocks are 

 segregating for H g D, H g F, He, he, He, Hh, hh. maintained by: Cn. 



List of symbols for designating strains and stocks of rabbits. 



Lu 



Ci Dr. C. K. Chai, R. B.Jackson Memorial 

 Laboratory, Bar Harbor, Maine. 



Cn Dr. C. Cohen, Battelle Memorial 

 Institute, Columbus, Ohio. 



Dr. Max Lurie, The Henry Phipps 

 Institute, Philadelphia, Pennsylvania. 

 Sa Dr. Paul B. Sawin, R. B. Jackson 

 Memorial Laboratory, Bar Harbor, 

 Maine. 



VI. PEROMYSCUS SP. 



Peromyscus sp., as a research animal in mammalian genetics and in medicine, has 

 not been widely used, despite the number of identified genetic traits and the possible 

 importance of some of these traits. For this reason, the locations of Peromyscus sp. 

 stocks are few. It is believed, however, that additional stocks do exist in the United 

 States, but applicable information had not been submitted by the time this list was 

 closed. It is hoped that future revisions will include such stocks. 



The stocks herein listed are given as submitted by the contributors. Since there 

 apparently are no inbred strains as such, but only stocks with identified genes, no changes 

 were made in stock designation. The descriptions given are very brieff but sufficient 

 to illustrate the kind of material available. 



Because no inbred strains exist, and, therefore, no problems have yet been created 

 with respect to strain definition, strain symbols, and so forth, it is probably not necessary 

 to establish a standardized system at this time. However, it is likely that such strains 



t A more detailed description of these genes can be obtained by writing to Dr. Elizabeth 

 Barto, Mammalian Genetics Center, University of Michigan, Ann Arbor, Michigan. 



