6533b824fe1ef96bd1280897

RESEARCH PRODUCT

Patterns of Puffing Activity in the Polytene Chromosomes of Drosophila Subobscura

R. De FrutosAmparo Latorre

subject

animal structuresPolytene chromosomebiologyEvolutionary biologyBalbiani RingsDrosophila ananassaefungiDrosophila hydeiChromosomal polymorphismDrosophila melanogasterDrosophila (subgenus)biology.organism_classificationDrosophila subobscura

description

The puffs and Balbiani rings are the visible expression of sites of genetic activity (Beerman, 1952). Since Beermann’s original hypothesis, puffing patterns for several species of Diptera have been described. Thus for the genus Drosophila, Ashburner (1967, 1969a and 1969b) has reported the puffing pattern of Drosophila melanogaster and Drosophila simulans, Beredens (1965) of Drosophila hydei, and Moriwaki and Ito (1969) of Drosophila ananassae. In a previous paper Frutos and Latorre (1981) have determined puffing patterns of the J and U chromosomes of Drosophila subobscura. This species shows a rich chromosomal polymorphism and the puffing pattern of several chromosomal rearrangements of the J and U chromosomes were studied. In spite of the fact that not much variability was found, we consider the standardization of a puffing pattern in this species important.

yearjournalcountryeditionlanguage
1982-01-01
https://doi.org/10.1007/978-1-4615-8321-9_4