Genetic Code

IMPORTANT

Genetic Code: Overview

This topic covers concepts such as Genetic Code, Characteristics of Genetic Code, Wobble Hypothesis, etc.

Important Questions on Genetic Code

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IMPORTANT

Which of the following is not a salient feature of genetic code?

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Which of the following codon perform dual function?

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Which one of the following pairs is correctly matched with regard to the codon and the amino acid coded by it?

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During protein synthesis in an organism, at one point the process comes to a halt. Select the group of the three codons from the following, from which anyone of the three could bring about this halt.

MEDIUM
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Which one of the following pairs is correctly matched with regard to the codon and the amino acid coded by it?

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Which one of the following codons codes for the same information as UGC?

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Identify the correct statement from the following:

HARD
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Khorana performed experiments to decipher the codons that code for a particular amino acid. The results of these experiments using synthetic mRNAs and the corresponding polypeptide repeats that were generated are given in the table below.

Synthetic mRNAs Polypeptide(s) synthesized
CAAn Thr-Thrn and Asn-Asnn and Gln-Glnn
UUCn Ser-Sern and Leu-Leun and Phe-Phen
UACn Thr-Thrn and Leu-Leun and Tyr-Tyrn
UUACn Leu-Leu-Thr-Tyrn

Based on the results, the correct combination(s) of codons and amino acids is/are

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Which of the following statements correctly describes a codon?

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Which ONE of the following statements is INCORRECT for translation in cytoplasm?

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Codon degeneracy means that

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Genetic code is:

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Which of the following is/are the salient feature(s) of genetic code?

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The salient feature of genetic code is that the codon is a triplet. 3 codons do not code for any amino acids, hence they function as _____ codons.

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Which of the following codes for methionine and also acts as an initiator codon?

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Which among the following is a dual-purpose codon?

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Match the following codons in the columns I with their amino acids in column II

   Column - I    Column - II
 1. GGU  i. Methionine
 2. UUU ii. Stop
 3. AUG iii. Glycine
 4. UAG iv. Phenylalanine
    v. Valine

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Which of the following is not a characteristic feature of genetic code?

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Match column-I to column-II.

  Codon   Amino acid
A AAA i Glycine 
B CCC ii Lysine 
C UUU iii Phenylalanine
D GGG iv Proline
    v Tyrosin

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IMPORTANT

Which of the following is a stop codon?