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Explain (in one or two lines the functio...

Explain (in one or two lines the functions of following: (a) Promoter
(b) tRNA
(c) Exons.

Text Solution

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(a) Promoter: It acts as an initiation signal which functions as recognition centre for`RNA^(-)` polymerase provided the operator gene is switched on.
(b) tRNA: It act s as an carrier molecule which transfers amino acids to ribosomes for synthesis of polypeptides.
(c) Exons: These are coding sequences or expressed sequences in an eukaryotic gene.
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