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Balbiani rings (puffs ) are sites of...

Balbiani rings (puffs ) are sites of

A

DNA replication

B

RNA and protein synthesis

C

synthesis of polysaccharides

D

synthesis of lipids

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The correct Answer is:
B
In polytene chromosomes (salivary gland chromosomes). Large swellings are called puffs or Balbiani rings, named after their discoverer. In such rings. DNA is active, uncoiled for rapid transcription of RNA or protein synthesis.
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-CELL CYCLE AND CELL DIVISION-EXERCISE
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  2. During karyokinesis, the spindle fibres get attached to condensing chr...

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  3. Crossing over in diploid organism is responsible for

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  4. A bacterium divides every 35 minutes. If a culture containing 10^(5) c...

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  5. During cell division in apical meristem nuclear membrane reappears in

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  6. How many mitotic divisions are needed for a single cell to make 128cel...

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  7. Which of the folliwng structure will not be common to mitotic cell of ...

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  8. The exchange of genetic material between chromatids of paired homologo...

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  9. Lampbrush chromosomes are visible

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  10. The point at which the polytene chromosomes appeart to be attached tog...

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  11. Meiosis is evolutionary significant because it results in

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  12. Best stage to observe shape, size and number of chromosome is

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  13. In salivary gland chromosomes/polytene chromosomes, pairing is

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  14. Meiosis II performs

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  15. Balbiani rings (puffs ) are sites of

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  16. Number of chromatids per chromosome at metaphase is

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  17. In meiosis, the daughter cells differ from parent cell as well as amon...

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  18. Mitotic anaphase differs from metaphase in possessing

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  19. A bivalent of meiosis i consists of

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  20. Meiosis-I is reductional division. Meiosis-II is equational division d...

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