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Chromosomal Analysis of Repeated DNAs in the Rainbow Wrasse Coris Julis (Pisces, Labridae)

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Abstract

Despite the interest of several authors, the karyotype of the labrid C. julis is still debated and in particular the presence of sex-chromosomes is still contradictory. In order to analyze the karyotype organization of C. julis we have performed an analysis with classical and molecular cytogenetic techniques. Our results after silver-, CMA3- and DAPI-staining, C-banding and fluorescent in situ hybridization (FISH) using 28S rDNA, 5S rDNA, and telomeric repeat (TTAGGG) n as probes allowed us to characterize the chromosomal location of several repetitive DNAs of C. julis. Finally, regardless of the technique used, no difference in the chromosome complement was found between males and females.

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Mandrioli, M., Colomba, M. & Vitturi, R. Chromosomal Analysis of Repeated DNAs in the Rainbow Wrasse Coris Julis (Pisces, Labridae). Genetica 108, 191–195 (2000). https://doi.org/10.1023/A:1004199902680

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