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Principles of Inheritance and Variation — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYPrinciples of Inheritance and Variation1 Mark
MCQ
Balbiani rings are found in:
  • A
    Polysomes
  • B
    Polytene chromosomes
  • C
    Autosomes
  • D
    None of the above
✓

Answer

  1. Polytene chromosomes

Explanation:

Polytene chromosomes in salivary glands of Drosophila are formed as a result of the replication of the chromosomes and the synapsis of homologues without cell division. The enlarged part of polytene chromosomes, presence between two bands in staining process, are termed as balbiani rings.

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