Patterns of DNase sensitivity in the chromosomes of Rana perezi (Amphibia: Anura)

Abstract
We have analyzed the patterns of DNase I/nick translation in the chromosomes of Rana perezi. The results show a nonuniform DNase sensitivity in different chromosome domains; the hypersensitivity appears to be concentrated at both the NOR and the distal regions. The resemblance to the situation in mammals, where active genes are DNase I hypersensitive, is discussed.Key words: DNase sensitivity, chromosomes, Rana perezi.