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Genetic Code and Regulation

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

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

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Genetic Code and Regulation
The genetic code is

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

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Genetic Code and Regulation
Translation begins

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

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

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Genetic Code and Regulation
Which of the following has been used as an evidence that primitive life forms lacked both DNA and enzymes?

DNA and enzymes are only present in the most advanced cells
RNA can both code genetic information and act as a catalyst
All of these
Advanced cells lack RNA

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

third base
none of these
first base
second base

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