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Nuclear speckles ______________

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Nuclear speckles  ______________

(a) perform splicing of snRNPs

(b) perform splicing of rRNAs

(c) act as a transcription site for rRNAs

(d) act as a storage site for snRNPs

I have been asked this question during an internship interview.

Origin of the question is Nucleus in chapter Nucleus & Aerobic Respiration of Cell Biology

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Correct choice is (a) perform splicing of snRNPs

For explanation I would say: Nuclear speckles, also called as splicing speckles are subnuclear structures that are enriched in pre-messenger RNA splicing factors and are located in the interchromatin regions of the nucleoplasm. The splicing factors help in the splicing of snRNPs and other splicing proteins that are necessary for pre-mRNA processing.

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