caa a22 4500 38639329X CHVBK 20180307112127.0 cr unu---uuuuu 161130e198910 xx s 000 0 eng 10.1017/S0016672300028494 doi S0016672300028494 pii (NATIONALLICENCE)cambridge-10.1017/S0016672300028494 The occurrence of long ribosomal transcripts homologous to type I insertions in bobbed mutants of Drosophila melanogaster [Elektronische Daten] In Drosophila melanogaster up to two thirds of the rDNA genes contain insertion sequences of two types in the 28S coding region. Comparison of the ribosomal insertion transcripts in the wild type and in two bobbed mutants reared at two temperatures showed that the level of type I transcripts is dependent on both the number of genes with type I insertions in the bobbed loci and the intensity of bobbed phenotype. Importantly, a long transcript of 8·7 kb hybridized to the ribosomal probe, the INS I probe and also to the restriction fragment of the rDNA downstream of the point of insertion was found in one bobbed mutant. This result and also those from sandwich hybridization indicate that some interrupted ribosomal genes are functional. Copyright © Cambridge University Press 1989 Makni Mohamed Laboratoire de Génétique, Faculté des Sciences, 1060 Tunis, Tunisie Marrakchi Mohamed Laboratoire de Génétique, Faculté des Sciences, 1060 Tunis, Tunisie Prud'Homme Nicole Centre de Génétique Moléculaire, Centre National de la Recherche Scientifique, 91190 Gif-sur-Yvelte, France Genetical Research Cambridge University Press 54/2(1989-10), 127-135 0016-6723 54:2<127 1989 54 GRH https://doi.org/10.1017/S0016672300028494 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0016672300028494 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Makni Mohamed Laboratoire de Génétique, Faculté des Sciences, 1060 Tunis, Tunisie NATIONALLICENCE 700 1- Marrakchi Mohamed Laboratoire de Génétique, Faculté des Sciences, 1060 Tunis, Tunisie NATIONALLICENCE 700 1- Prud'Homme Nicole Centre de Génétique Moléculaire, Centre National de la Recherche Scientifique, 91190 Gif-sur-Yvelte, France NATIONALLICENCE 773 0- Genetical Research Cambridge University Press 54/2(1989-10), 127-135 0016-6723 54:2<127 1989 54 GRH CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge