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Genetic Code and Regulation

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

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

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

first base
none of these
third base
second base

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Genetic Code and Regulation
The genetic code is

kingdom-specific
universal except for rare exceptions in mitochondria and some protozoa
universal
species-specific

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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?

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

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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?

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

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Genetic Code and Regulation
The sequence of one strand of DNA is: 5' ATTGCCA 3', what is the sequence of the other strand?

5' UAAGCCU3'
5' ATTGCCA 3'
5' TAACGGT 3'
5' TGGCAAT 3'

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