The primary constriction of a chromosome are surrounded by ______.
A
Centromere
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B
Centrosome
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C
Kinetochore
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D
Satellite
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Solution
The correct option is C Kinetochore Every chromosome essentially has a primary constriction or the centromere on the sides of which disc shaped structures called kinetochores are present. Sometimes a few chromosomes have non-staining secondary constrictions at a constant location. This gives the appearance of a small fragment called the satellite. And centrosome is an organelle responsible for cell division.