Zebra seedling, zb4, has been located in chromosome 1 by the following studies.

Genes Phase XY Xy xY xy Total % Recomb.
Zb4 Br RS 448 142 152 12 754 31.1
Zb4 F1 RS 455 135 158 9 757 28.0
Zb4 Bm2 RS 487 103 144 23 757 46.0
Zb4 P CS 266 24 5 64 359 6.9

Progeny of 1 ear indicated that the P parent was heterozygous giving the following segregation:

  CS 63 30 2 24 199 6.7