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CHROMOSOME

 Each chromosome is made up of condensed DNA which is tightly coiled many times around
proteins called histones and visible under metaphase stage.
 It has a constriction point called the centromere, which divides the chromosome into two “arms” -
short arm (p arm) and long arm (q arm).
 Depending on the position of centromere the chromosomes are classified morphologically into
metacentric, submetacentric and acrocentric chromosomes
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