Nucleolus is the site of

m - RNA synthesis

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Assemblage of ribosomal units

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Both (1) and (2)

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DNA and protein synthesis

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Solution

The correct option is B Assemblage of ribosomal units
Nucleolus was discovered by Fontana (1781) and given name by Bowman (1840). It does not have membrane and is attached to chromatin at nucleolar organiser region (NOR). Nucleolus is the site for elaboration of r-RNA and synthesis of ribosomes, hence called ribosomal factory. So, the correct answer is 'Assemblage of ribosomal units'

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