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The LSP1‐alpha gene of Drosophila melanogaster exhibits dosage compensation when it is relocated to a different site on the X chromosome.
Author(s) -
Ghosh S.,
Chatterjee R. N.,
Bunick D.,
Manning J. E.,
Lucchesi J. C.
Publication year - 1989
Publication title -
the embo journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.484
H-Index - 392
eISSN - 1460-2075
pISSN - 0261-4189
DOI - 10.1002/j.1460-2075.1989.tb03491.x
Subject(s) - biology , dosage compensation , drosophila melanogaster , genetics , gene dosage , gene , chromosome , x chromosome , compensation (psychology) , alpha (finance) , evolutionary biology , gene expression , statistics , psychology , construct validity , mathematics , psychoanalysis , psychometrics
The LSP1‐alpha gene of Drosophila melanogaster is located on the X chromosome at 11B yet is not dosage compensated. In order to determine if this gene is inherently incapable of dosage compensation or if it does not compensate because the appropriate regulatory cis‐acting sequences are absent from its chromosomal domain, we have undertaken to relocate it to ectopic sites on the X chromosome. To differentiate between the transcripts produced by the transduced gene and those produced by the indigenous gene, we inserted a 500‐bp sequence of mouse DNA into the LSP1‐alpha clone prior to using it for transformation. Our results show that the LSP1‐alpha gene exhibits equivalent levels of transcripts in the two sexes when it is relocated to either an autosomal site or to an ectopic site on the X chromosome. We conclude that the LSP1‐alpha gene is capable of dosage compensation.