COLOR VARIETIES OF MICE. 



49 



COLOR VARIETIES OF MICE.* 



A. Extended Series (Restriction Factor Absent). 

 1. With the agouti pattern. 



Color variety. 



1. Black agouti, fig. 1 YBrBDPA ' 



2. Dilute black agouti, fig. 2 YBrBdPA 



3. Pink-eyed black agouti, fig. 3 YBrBDpA 



4. Pink-eyed dilute black agouti, fig. 4 YBrBdpA 



5. Brown agouti, fig. 5 YBrDPA 



6. Dilute brown agouti, fig. 6 YBrdPA 



7. Pink-eyed brown agouti, fig. 7 YBrDpA 



8. Pink-eyed dilute brown agouti, fig. 8 YBrdpA 



9. 

 10. 

 11. 

 12. 



13. 

 14. 

 15. 

 16. 



2. Without the agouti pattern. 



Black, fig. 9 YBrBDP 



Dilute black, fig. 10 YBrBdP 



Pink-eyed black, fig. 11 YBrBDp 



Pink-eyed dilute black, fig. 12 YBrBdp 



Brown, fig. 13 YBrDP 



Dilute brown, fig. 14 YBrdP 



Pink-eyed bro\\Ti, fig. 15 YBrDp 



Pink-eyed dilute brown, fig. 16 YBrdp 



Black 

 agouti 

 series 



Brown 



agouti 

 series 



Black 

 series 



Brown 

 series 



B. Restricted Series. Animals in this Series Always Heterozygous in R. 



20 

 21 

 22 

 23 

 24 



25 

 26 



Color variety. 



17. Black-eyed yellow YBrBDP AR 



18. Black-eyed yellow, fig. 17 YBrBDPR 



19. Brown-eyed yellow, fig. 18 YBrDPAR 



Brown-eyed j'ellow YBrDPR 



Dilute black-eyed yellow YBrBdPAR 



Dilute black-eyed yellow YBrBdPR 



Dilute brown-eyed yellow YBrdP AR 



Dilute brown-eyed yellow, fig. 19 YBrdPR 



Pink-eyed yellow YBrBDp AR f^^^^^^-' ^^^^^1 



Pink-eyed yellow YBrBDpR 



Dark-eyed 

 intense yel- 

 low series 



Dark-eyed 

 dilute yel- 

 low series 



27. Pink-eyed yellow YBrDpAR 



28. Pink-eyed yellow YBrDpR 



29. Pink-eyed dilute yellow YBrBdpAR 



30. Pink-eyed dilute yellow YBrBdpR 



31. Pink-eyed dilute yellow YBrdp AR 



32. Pink-eyed dilute yellow YBrdpR 



and yellow 



pigment. I . - i 



T> , ^ u intense yel- 



Brown and , ' 



yellow pig- 

 ment only 



[Black, brown 

 and yellow 

 pigment 



fBrown and 

 yellow pig- 

 ment only 



Pink-eyed 

 intense ye" 

 low series 



Pink-eyed 

 dilute yellow 

 series 



There are 32 pigmented varieties of mice which may be obtained in pure 

 races. The "restricted series," however, may be obtained pure in the sense 

 only that animals may be obtained which give merely the type of yellow 

 written before their gametic formula, and the single variety of the "extended" 

 series which the rest of their gametic constitution demands. Albino varieties 

 corresponding with these 32 colored forms are expected to occur and may be 

 produced at will. These albinos are distinguishable from one another only by 

 breeding tests, and it is therefore doubtful whether all the 32 varieties have 

 as yet been isolated. 



* The factors T (total pigmentation) and S (self-pigmentation) are not included in these 

 formulae. 



