Abstract
Cross-species reciprocal chromosome painting was used to determine homologous chromosomal regions between the laboratory mouse and Chinese hamster. When mouse chromosome-specific paints were hybridized to Chinese hamster chromosomes, paints specific for mouse chromosomes 3, 4, 9, 14, 18, 19 and X each painted a single chromosomal region, whilst other mouse paints delineated multiple discrete chromosomal regions. The mouse Y paint produced non-specific signals on Chinese hamster chromosomes. Nineteen mouse autosome paints identified a total of 47 homologous chromosome regions in the genome of the Chinese hamster. Hybridization of Chinese hamster paints to mouse chromosomes not only confirmed the above results, but also identified which of the chromosomal regions of these two species were homologous. In total, 10 Chinese hamster autosomal paints detected 38 homologous autosomal segments in the mouse genome. A comparative chromosome map was established based on these reciprocal chromosome painting patterns. This map forms the basis for exchanging gene mapping information between the species and for studying genome evolution.
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Yang, F., O'Brien, P.C.M. & Ferguson-Smith, M.A. Comparative Chromosome Map of the Laboratory Mouse and Chinese Hamster Defined by Reciprocal Chromosome Painting. Chromosome Res 8, 219–227 (2000). https://doi.org/10.1023/A:1009200912436
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DOI: https://doi.org/10.1023/A:1009200912436