Nucleolus is formed by a particular region of chromosome called as

Primary constriction

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Secondary constriction

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Sat chromosome

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Balbiani ring

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Solution

The correct option is C Secondary constriction
Secondary constrictions of chromosomes are narrow areas of two types - Joints and Nucleolar Organising Region or NOR. Joints are areas involved in breaking and fusion of chromosome segments. NOR is secondary constriction capable of forming nucleolus in interphase.
So, the correct answer is 'Secondary constriction'

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Similar questions

Which reorganize nucleolus during telophase?

A) Sec. Constriction - I

B) Sec. Constriction - II

C) Primary Constriction

D) Pore complex

The primary constriction of a chromosome is indicated by

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