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Published on: December 23, 2016
In situ hybridization of repetitive monkey genome sequences isolated from defective simian virus 40 DNA
Abstract:
The origin of a repetitive monkey DNA sequence that is incorporated into a defective simian virus 40 genome has been studied. A fragment (about 140 base pairs in length) containing essentially all the repetitive monkey DNA present in the defective and few, if any, SV40 sequences can be cleaved from the purified defective DNA by restriction endonucleases Hind(II and III). Radioactive cRNA prepared with the isolated fragment as template was hybridized in situ to African green monkey chromosomes. The results indicate that all or part of the sequence in question occurs at both centromeric and noncentromeric positions in many, but not all, chromosomes. Of the typical 60 chromosomes, between nine and eleven hybridize with the cRNA in noncentromeric regions.
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