OF MUTANT CHARACTERS. 



147 



Table 15. — Summary of cross-over data involving black — continued. 



Loci. 



ack curved. 



lack plexus . 



lack fringed 

 lack arc ... . 



lack blistered 



lack pinkish . 

 lack speck . . . 



ack balloon . 



ack morula 



Date. 



Jan. 13, 1913 



Jan. 13. 1913 



Jan. 13, 1913 



June 8. 1913 



Aug. 24. 1913 

 Oct. 16, 1913 



May — . 1914 

 Jan. 5, 1915 



Dec. 13, 1915 



Jan. 1, 1915 

 July 20. 1915 



Apr. 3. 1916 



Oct. 23, 1915 



Dec. 13. 1912 

 Aug. 4, 1914 



Nov. 4, 1913 



Sept. 23, 1914 

 Oct. 16, 1913 



May — , 1914 



Mar. 29, 1913 

 May — , 1914 



Sept. 28. 1913 

 Aug. 4, 1914 



By- 



B. & Stutt. 



Do. 



Do. 

 Sturtevant . 



Bridges .... 

 Sturtevant. 



Muller. 

 Plough . 



Plough . . . . 



Bridges . . . . 

 Do. 



Do. 



Bridges . . . . 



Bridges . . . . 

 Do. 



Bridges. . . . 



Do. 



Sturtevant . 



Muller 



Reference. 



Biol. Bull. '14. p. 209; fe c and — B.C. 



Biol. Bull. '14. p. 208; 6 c Fi. 



h 



Biol. Bull. '14. p. 212, — B.C. 



c 



Zeit. f. I. A. u. v.; 'la. p. 247; 



bVfC B.C. 

 Pr; b pr c B.C.; lata; II5H-II88. 

 Zeit. f. L A. u. v.. '15. p. 247, 



b c Sp B.C. 

 Am. Nat. '16. p. 422. 

 J. E. Z. '17, h p, c B.C. totals. 



S' 



J. E. Z. '17 



6 c 



B.C. controls. 



Px;b p, B.C.; 1084-'99. 



S' 



B.C.; 1921-24. 



px; 



b Px 



Sn: 



Sa 



b Px 



B.C.; 4044. 



Sturtevant . 

 Muller . . . . 



Bridges . . 

 Do. 



fr: 



bf, 



B.C.; 2282-'84. 



a; 6 a B.C.; C 172-11 3. 



m,; b a nif balanced B.C.; 364 



h»: 



Bs 



B.C.; II 102- 



Pinkish; h pinkish B.C.; 525-2426. 

 Zeit. f. I. A. u. V. '15, p. 247. 



b c Sp B.C. 

 Am. Nat. '16. p. 422. 



Zeit. f. I. A. u. V. '15. p. 276; B.C. 



m,:bmrYi.C.\ II 93-11 96. 

 mp 6 am, balanced B.C.; 364. 



The zero position in the second chromosome has been delegated to 

 star, which is found to be 46.5 units to the left of black, that is, black is 

 at an approximate position of 46.5 on the map as recast with star as the 

 zero-point. Table 15 gives a summary of all the cross-over data 

 previously published as well as that given in other sections of this paper. 



