The Genetic Code

Which of the following codon perform dual function?

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.

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

Sequence of an mRNA segment is as follows:

$5\text{'}-\mathrm{AUCCAUGACCUGGAGAUGU}-3\text{'}$

Which of the following changes make(s) it a complete translation unit?

I. Substitution of C by G at 3rd base from 5'-end.

II. Substitution of G by U at 8th base from 3'-end.

III. Substitution of A by U at 6th base from 3'-end.

IV. Deletion of 7th G from 3'-end.

Due to deletion of certain nucleotides from the terminal end of mRNA, now it codes for 99 amino acids instead of 100 amino acids. How many nucleotides' deletion can be responsible for the loss of 1 amino acid?

Due to deletion of certain nucleotides from the terminal end of mRNA, now it codes for 99 amino acids instead of 100 amino acids. How many nucleotides deletion can be responsible for the loss of one amino acid ?

Dr. Hargovind Khorana has made contribution in the discovery of

The number of codons effective in coding twenty amino acids:

Which of the following is a non-sense codon?

In Eukaryotes, one of the following mechanisms is not correct in terms of regulation of gene expression?

How many $\mathrm{t}$-RNA exist for stop codon

Number of initiation and stop codon out of $64$ codons are

Following is the sequence of amino acids coded by an $\mathrm{m}$-RNA. Predict the nucleotide sequence in $\mathrm{m}$-RNA

$\mathrm{Met}-\mathrm{Phe}-\mathrm{Phe}-\mathrm{Phe}-\mathrm{Phe}-\mathrm{Phe}-\mathrm{Phe}$

The first genetic codon deciphered was code for which amino acid

Codon (on $\mathrm{m}$-RNA) and anticodon(on $\mathrm{t}$-RNA) for Methionine amino acid is

Humans requires _____ codons to synthesize $20$ amino acids

The genetic code: