THE RIBOSOMES OF DROSOPHILA II. STUDIES ON INTRASPECIFIC VARIATION

Edward M. Berger 1 and Lee Weber 2

1 Department of Biological Sciences, State University of New York at Albany, Albany, New York 12222
2 Genetics and Cell Biology Section, University of Connecticut, Storrs, Connecticut 06268

Electrophoretic comparisons of 40S and 55S ribosomal subunit proteins from 18 strains of Drosophila melanogaster revealed the virtual absence of allelic variation. More detailed two-dimensional studies on the large subunit proteins in 6 of the strains demonstrated additional complexity but still no interstrain variation. The significance of these results is discussed with respect to present estimates of genic heterozygosity in natural populations.

Submitted on March 4, 1974
Revised on June 21, 1974