7. A hybrid between a Lancaster inbred (696-3c) and Pamunkey in 1936 produced all semi-sterile ears. Cytological examination of the hybrid in 1938 showed the presence of a heterozygous translocation involving chromosomes 1 and 2. The point of interchange in chromosome 1 is in the short arm, at approximately 6/10 of the distance from the spindle fiber attachment region to the end of the chromosome. The break was between the spindle fiber and a knob on the short arm. The point of interchange on chromosome 2, on the long arm, is approximately half way between the spindle fiber and the end of the chromosome. Chromosome 2 also has a knob. Seed of the homozygous translocation is available.