Question

what are nucleolus composed of​

Answer 1

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The nucleolus (see Fig. 1-1) is a non–membrane-bound structure within the nucleus that forms around chromosomal loci of the ribosomal RNA (rRNA) genes known as nucleolar organizing regions (NORs). ... Thus it consists of ribosomal DNA, RNA, and ribosomal proteins, including RNA polymerases, imported from the cytosol

Answer 2

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