2. Two point tests on chromosome 1.

Genes Phase XY Xy xY xy Total % Recomb.
Ts6 F CB 21 17 20 32 90 41.1
Ts6 Gs CB 128 37 46 113 324 25.6

Order of genes in chromosome 1 would then be: br f gs bm2 Ts6. (See also Emerson, this News Letter)