Abstract
In order to improve the informativeness of the cytogenetic map of the rabbit genome, fourteen markers were regionally mapped to individual chromosomes. The localizations comprise eleven gene loci (PRLR, GHR, HK1, ACE, TF, 18S+28S rDNA, CYP2C4, PMP2, TCRB, ALOX15 and MT1) and three microsatellite loci (Sat13, Sol33 and D1Utr6). Five of the genes contain known microsatellite sequences. To achieve these localizations, homologous and heterologous small insert clones, and clones from a rabbit Bacterial Artificial Chromosome (BAC) library were used as probes for fluorescence in situ hybridization experiments. Results indicate that especially BAC clones are a valuable tool for cytogenetic mapping. Some of the genes were selected for mapping on the basis of human- rabbit comparative painting data, to achieve localizations on gene-poor rabbit chromosomes. Our data are, in general, in agreement with the human-rabbit comparative painting data. By mapping microsatellite sequences that have also been used in linkage studies, links are provided between the genetic and physical maps of the rabbit genome. Linkage groups I, VI and XI could be assigned to chromosomes 1, 5 and 3 respectively. Moreover, in this paper we give an overview of the current status of the rabbit cytogenetic map. This map now comprises 62 physically mapped genes, which are scattered over all autosomes, except chromosome 2, and the X chromosome.
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