All the following statements about genetic code are correct except:
A. It is degenerate
B. It is unambiguous
C. It is nearly universal
D. It is overlapping
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A codon AUG is a:
A. Chain-initiating codon
B. Chain-terminating codon
C. Releasing factor for peptide chains
D. Recognition site on the tRNA
In biosynthesis of proteins, the chain-terminating codons are:
A. UAA, UAC and UGA
B. UGG, UGU and AGU
C. AAU, AAG and GAU
D. GCG, GCA and GCU
Formation of initiation complex in protein biosynthesis involves:
A. Dissociation of ribosome into its 40S and 60S subunits
B. Formation of 48S initiation complex
C. Formation of 80S initiation complex
D. All of the above
In contrast to eukaryotic mRNA, prokaryotic mRNA:
A. has a poly A tail
B. has 7-methylguanosine at the 5′ end
C. can be polycistronic
D. none of the above
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