The dark-staining region inside the nucleus where ribosome assembly begins is the:
ANucleosome
BNucleolus
CNucleotide
DNuclease
Answer & Solution
Correct answer: B. Nucleolus
1. Some chromosomes carry DNA coding for ribosomal RNA.
2. That work is concentrated in one visible patch.
3. That patch is the nucleolus.
_Source: OpenStax Concepts of Biology, Chapter 3, Cell Structure and Function._
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