Abstract
The fluorescence in situ hybridization (FISH) technique is widely used in animal cytogenetics. Contrary to FISH procedure, primed in situ DNA synthesis (PRINS) does not require the DNA probe preparation (design, synthesis, gel purification of PCR products and labeling). The PRINS method with primers used as 'DNA probes' is both PCR-sensitive and allows for chromosomal localization of DNA sequences. Here, we show the application of PRINS reaction with one unlabeled oligonucleotide pair to identify 18S rDNA loci in three different animal species: domestic pig (Sus scrofa), red fox (Vulpes vulpes) and Chinese raccoon dog (Nyctereutes procyonoides procyonoides). We present the data of indirect labeling with the digoxigenin-PRINS using two different pairs of primers complementary to centromeric region of horse (Equus caballus) chromosomes. Our new PRINS application may be considered as a useful tool for chromosome investigation in the field of domestic and wild animal genetics and evolution.
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