Abstract
Applying a staining procedure which reveals constitutive heterochromatin to cytological preparations of the mouse (Mus musculus), one detects heterochromatin pieces at the centromeric areas of all chromosomes except the Y. The Y chromosome is somewhat heteropyenotic in general but possesses no intensely stained centromeric heterochromatin. The arrangement of the centromeric heterochromatin in interphase cells is apparently specific for a given cell type. In meiotic prophase, centromeric heterochromatin may form clusters among bivalents. From the location of the centromeric heterochromatin of the X chromosome in the sex bivalent, it is concluded that the association between the X and Y (common end) in meiosis is limited to the distal portions of the sex elements.
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Hsu, T.C., Cooper, J.E.K., Mace, M.L. et al. Arrangement of centromeres in mouse cells. Chromosoma 34, 73–87 (1971). https://doi.org/10.1007/BF00285517
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DOI: https://doi.org/10.1007/BF00285517