Variation at the 87A heat shock locus in Drosophila melanogaster

AUTOR(ES)

Brown, Andrew J. Leigh

RESUMO

Restriction maps for 25 kilobases of DNA around the 87A7 heat shock locus have been determined in 29 chromosomes isolated from a natural population. The heterozygosity per nucleotide and the proportion of polymorphic nucleotide sites were estimated to be 0.0024 and 0.007, respectively. The mean number of insertional differences in this region between random pairs of chromosomes was 0.95. A significant amount of this variation was due to the insertion of large transposable elements. All the insertion/deletion events were found in a region less than 2 kilobases in size. This could either be due to nonrandom integration or to differences in the intensity of selection against DNA insertion at different sites.

Documentos Relacionados

• Cloning of heat-shock locus 93D from Drosophila melanogaster.
• PHENOTYPIC VARIATION AND PSEUDO-ALLELISM AT THE FORKED LOCUS IN Drosophila Melanogaster
• Regulated expression of a Drosophila melanogaster heat shock locus after stable integration in a Drosophila hydei cell line.
• Hidden Electrophoretic Variation at the Xanthine Dehydrogenase Locus in a Natural Population of DROSOPHILA MELANOGASTER
• Genes for three Drosophila heat-shock-induced proteins at a single locus.