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GENETIC CODE AND REGULATION

Genetic Code and Regulation
Crick demonstrated that the genetic code involved three bases and suggested that the code was degenerated. What experimental technique Crick conducted to suggest genetic code degeneration?

Gel electrophoresis
Frameshift mutagenesis
Density gradient centrifugation
Restriction digests of the rII gene

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

second base
first base
none of these
third base

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Genetic Code and Regulation
In some organelles in eukaryotes, the genetic code for some codons

are partially same
None of these
are same
differs from that used in prokaryotes

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

initiation code
none of these
propagation code
termination code

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Genetic Code and Regulation
The genetic code is degenerated. Which of the following codons represents the principle of degeneracy?

UAA and UAC
AUG and AUA
UUA and UUC
CAU and CAC

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