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Karyotype evolution in cell lines of Drosophila melanogaster

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Abstract

The chromosomal changes occurred in two independent cell lines (GM2 and GM3) of Drosophila melanogaster maintained in medium supplemented with serum and in serum-free medium were compared. In both culture conditions and in both lines a chromosomal evolution was revealed. Structural and numerical variations were analysed. The breaks giving rise to rearrangements were at heterochromatic level. Moreover, a tetraploidisation followed by loss of chromosomes or of portions of chromosomes recalls an analogous cycle observed in human cells.

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This work was supported by a grant of the Consiglio Nazionale delle Ricerche, Roma.

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Dolfini, S.F. Karyotype evolution in cell lines of Drosophila melanogaster . Chromosoma 58, 73–86 (1976). https://doi.org/10.1007/BF00293442

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  • DOI: https://doi.org/10.1007/BF00293442

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