House mice carrying aberrant chromosome 1 with an insertion of homogeneously stained regions (HSR) have been studied. The mice were collected in the North Caucasus, Chita and Amur oblasts, Spitzbergen and Kunashir Islands, Altai krai, Khabarovsk krai, Primorye, Sakhalin, Kamchatka, Turkmenistan, and Kazakhstan. In these mice, the aberrant chromosomes were assigned to the “Asian” type, i.e. they carried two HSR insertions. The aberrant chromosome 1 in house mice from different geographic regions was shown to differ in size of HSR, staining intensity, and some other features of Q-H, C, and G-banding, which suggests independent origin of this aberration in house mouse populations from different taxa and regions. A novel variant of chromosome 1 in mice of the subspecies M. m. wagneri was found.
Russian Journal of Genetics – Springer Journals
Published: Aug 30, 2007
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