Nucleolus synthesises RNA

28 S and 18 S

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28 S, 18 S and 5 S

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28 S, 5.8 S and 5 S

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28 S, 18 S and 5.8 S

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Solution

The correct option is B 28 S, 18 S and 5.8 S
The nucleolus, which is not surrounded by a membrane, is organized around the chromosomal regions that contain the genes for the 5.8S, 18S, and 28S rRNAs. Eukaryotic ribosomes contain four types of RNA, designated the 5S, 5.8S, 18S, and 28S rRNAs.
So, the correct answer is '28 S, 18 S and 5.8 S.'

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c. RNA pol. III	iii. Synthesizes rRNA (28S, 18S) in nucleolus

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