Article Text

Download PDFPDF
Ring XY bivalent: a new phenomenon at metaphase I of meiosis in man.
  1. A C Chandley,
  2. T B Hargreave,
  3. S McBeath,
  4. A R Mitchell,
  5. R M Speed


    The unusual appearance of a ring XY bivalent at metaphase I of meiosis is reported in some cells of an oligospermic human male. Higher than usual frequencies of ring configuration in the XY pair were also observed during prophase I. The defect could be attributable to loss of some DNA sequences from the distal heterochromatic tip of the Y chromosome long arm.

    Statistics from

    Request Permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.