Abstract
1. 1. Extracts from each of the fat body, thoracic and appendage muscle of both sexes of the American cockroach yielded a single disc electrophoretic GDH fraction, which was quantitative and qualitatively stable during the first 6 months of the imago. 2. 2. Enzymes extracts from 3 cockroach species were heat stable at 52° for 30 min. 3. 3. GDH patterns were highly species-specific among the 24 cockroach species analyzed. Generic relationships were postulated on the basis of R f similarity. 4. 4. Clones of parthogenetic Pycnoscelus surinamensis, with modal chromosome complements of 34 to 54, each had a single GDH fraction and all R f values were identical.
Published Version
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