Medical Definition of Ring chromosome

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Reviewed on 12/27/2018

Ring chromosome: A structurally abnormal chromosome in which the end of each chromosome arm has been lost and the broken arms have been reunited to form a ring. A ring chromosome is denoted by the symbol r.

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Reviewed on 12/27/2018