Inasmuch as the writer was assigned chromosome 2 he has from time to time collected additional data on the location of certain genes placed in the map by two-point tests

5. Inasmuch as the writer was assigned chromosome 2 he has from time to time collected additional data on the location of certain genes placed in the map by two-point tests. The floury locus was placed between sk and ts by two-point data. This has been confirmed by three-point tests. Some of the data involving floury are presented below:

lg gl B Fl v4	x	lg gl b V4 v4
Lg Gl b fl V4

B.C. for lg gl B Fl

F₂ for V4

Lg-Gl 16%; Gl-B 16%; B-Fl 16%; Fl-V4 14%; B-V4 23%

The order is lg gl B Fl V4

B Fl ts v4	x	b	Ts-v4
b fl Ts V4	x		ts-V4

B.C. for B Fl

F₂ for ts and v4

B-Fl 19%; Fl-Ts 3%; B-Ts 21%; Fl-V4 18%; B-V4 32%

The order is B Fl ts v4

Summary of unpublished linkage data for chromosome 2

XY Genes	Phase	XY	Xy	xY	xy	Total	Percent recombination
B Fl	CB	549	135	129	663	1476	18
B Ts	RS	254	101	413	27	795	21
B V4	RS	480	204	716	76	1476	26
Fl Ts	RS	376	243	768	7	1394	3
Fl V4	RS	569	281	891	60	1801	18
Gs2 Fl	RS	161	212	113	19	505	17

M. M. Rhoades