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q arm of a chromosome

q arm of a chromosome: The long arm of a chromosome.

All human chromosomes have 2 arms — a short arm and a long arm — that are separated from each other only by the centromere, the point at which the chromosome is attached to the spindle during cell division. By international convention, the short arm is termed the “p arm” while the long arm of the chromosome is termed the “q arm.”


 

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