Centrioles arise from

Pre-existing centrioles

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De novo

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Nuclear envelope

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Sphaerosome

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Solution

The correct option is A Pre-existing centrioles
Cytoplasm of eukaryotic animal cells contains two cylindrical, rod-shaped, microtubular structures, called centrioles, near the nucleus. Centrioles lack limiting membrane and DNA or RNA and form a spindle of microtubules. Though centrioles have not been found to contain DNA, yet they are capable of forming new centrioles with the help of pericentriolar satellites which function as nucleating centers.
So, the correct answer is 'Pre-existing centrioles'

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