A) RNA
B) rRNA
C) mRNA
D) pre-mRNA
Correct Answer: A
Solution :
Francis Crick first postulated the presence of an adapter molecule that would on one hand read the code and on other hand would bind to specific amino acids. The tRNA then called sRNA (soluble RNA), was known before the genetic code was postulated. However, its role as an adapter molecule was assigned much later. fRNA has an anticodon loop that has three bases complementary to the code and also has an amino acid accepter end to which it binds to amino acids.
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