BIO NMDCAT Chromosomes

nmdcat.online July 4, 2026

8. The chromosomal region structurally associated with the formation and reorganization of the nucleolus during telophase is the

A. Primary constriction

B. Secondary constriction

✓

C. Telomeric loop

D. Centromeric matrix

📝 Explanation

Secondary constrictions, also designated as Nucleolar Organizer Regions (NORs), contain specific genetic configurations responsible for transcribing ribosomal RNA and reorganizing the nucleolus.

📖 Additional Information

Primary constriction
Secondary constriction
Telomeric loop
Centromeric matrix

Secondary constrictions, also designated as Nucleolar Organizer Regions (NORs), contain specific genetic configurations responsible for transcribing ribosomal RNA and reorganizing the nucleolus.

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