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Explain the peripheral granular region/area of neucleolus?
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Nucleolus. The nucleolus 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). The nucleolus is the site of transcription and processing of rRNA and of assembly of preribosomal subunits.
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The nucleolus is a distinct structure in the nucleus of the cell composed of filamentous and granular material. ... In the electron microscope, the nucleolus consists of a darker fibrillar (pars fibrosa) and granulated (pars granulosa) matrix interspersed with lighter areas.
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