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Genetic Code and Regulation

Genetic Code and Regulation
The codons which do not specify an amino acid are called

propagation code
initiation code
termination code
none of these

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Genetic Code and Regulation
How many different codons are possible?

64
20
3
An infinite number

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Genetic Code and Regulation
Which of the following techniques was carried out by Nirenberg and Matthaei in 1961 to determine the first codon?

None of these
Mixed co-polymer mRNA synthesis
Labeled peptide binding to a ribosome
In vitro synthesis of a polypeptide using UUUUU

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Genetic Code and Regulation
Translation begins

in nucleus
at the replication fork
at the start codon
on the lagging strand

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Genetic Code and Regulation
Codon that specify the amino acids often differs in the

none of these
first base
third base
second base

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Genetic Code and Regulation
Bacterial protein called catabolic activator protein (CAP) is an example of

second type of positive control of gene expression
negative control of gene expression
positive control of gene expression
None of these

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