A centriole is said to have a 9+0 arrangement of microtubules. The 9 here signifies _________.

number of microtubules

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sets of microtubules

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number of central microtubules

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sets of central microtubules

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Solution

The correct option is B sets of microtubules
The centrosome consists of two perpendicularly arranged centrioles. Each centriole is composed of 9 sets of radially arranged microtubules that run parallel to the axis of the centriole.

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