Presence of cox2 in mt DNA assayed by slot blot
hybridization. Shown are hybridizations of mt cox2 and
cox1 probes from soybean to 41 of 392 legume DNAs
examined. Boxes designate legumes with diminished or undetectable
cox2 hybridization relative to the cox1
control: a, Phaseolinae species (left, and also bottom right), b,
Psoraleeae species (middle, and also bottom right), and c, Cajaninae
species (top right).