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Genetic Code and Regulation

Genetic Code and Regulation
How many amino acids will be encoded by 5' GAU GGU UGA UGU 3' sequence?

One
Three
Four
Two

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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?

Advanced cells lack RNA
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

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

third base
none of these
second base
first base

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Genetic Code and Regulation
Translation begins

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

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Genetic Code and Regulation
In protein synthesis in prokaryotes

the initiating amino acid is phenyl alanine
the initiating amino acid is N- formyl methionine
the initiating amino acid is methionine
None of these

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Genetic Code and Regulation
The genetic code is

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

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