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Balbiani rings (puffs) are sites of

1. DNA replication
2. RNA and protein synthesis
3. synthesis of polysaccharides
4. synthesis of lipids

Correct answer: RNA and protein synthesis

Solution

Balbiani rings are large chromosome puffs seen in polytene chromosomes where genes are highly active. These regions are sites of intense transcription, leading to RNA production and subsequent protein synthesis.

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