Abstract
The polytene chromosome puffing patterns of Drosophila guanche were established and compared with those of Drosophila subobscura. A total of 150 loci, active in some of the 17 developmental stages studied, were described and 23 of them were found to form the characteristic puffing pattern of D. guanche. Taking into account the number of puffs as well as the gene activity of each chromosome and the total gene activity, D. guanche seems to be less active than D. subobscura. Although both species show a degree of homology in their puffing patterns lower than that found for sibling species, the degree of homology is stronger than that between species belonging to the same group but to different subgroups. Thus, D. guanche and D. subobscura must be considered as phylogenetically closely related species, belonging to the same subgroup.
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Moltó, M.D., de Frutos, R. & Martínez-Sebastián, M.J. Gene activity of polytene chromosomes in Drosophila species of the obscura group. Chromosoma 96, 382–390 (1988). https://doi.org/10.1007/BF00330706
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DOI: https://doi.org/10.1007/BF00330706