Differential staining of cultured bone marrow cell chromosomes of Rana pipiens.

Structural characteristics of genome organization in amphibians: Differential staining of chromosomes and DNA structure

“…A slight inter-and intrapopulation polymorphism in the number and position of C-and Ag-ASbands was found. A conclusion similar to ours concerning the particular character of G-banding process in the case of anuran chromosomes was made after experiments on G-staining of Rana pipiens chromosomes: almost all the conventional methods of G-banding resulted in "uniformly spaced light and dark regions of a beadlike character" (Manago et al 1980). As for the anuran DNA structure, it was shown that in dusters of repetitive DNA of R. berlandieri one class of repetitive sequences is interspersed with others (Graham and Schanke 1980).…”