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Molecular Basis of Inheritance
Types of RNA and Translation
1 question from 1 paper, each with its answer.
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Concepts tested
- Clover leaf model of tRNA
All Questions
2004 AIPMT 1 question
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Which form of RNA has a structure resembling clover leaf ?Transfer RNA (tRNA) is a small RNA of about 70–90 nucleotides.
In two dimensions it folds back on itself by base pairing to give a clover leaf structure (proposed by Holley): an acceptor arm (with the CCA 3' end where the amino acid is attached), the DHU arm, the anticodon arm (with the anticodon loop), and the T$\psi$C arm.
In three dimensions the tRNA looks like an inverted L.
mRNA is a linear strand, hnRNA is the unprocessed precursor of mRNA, and rRNA forms the ribosomes.
So the RNA with a structure resembling a clover leaf is tRNA.