Genetic Code and Gene Mutations

Which of the following is the function of tRNA in a prokaryote?

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?

Frameshift mutation occurs when

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 ?

Against the codon 5' UAC 3', what would be the sequence of anticodon on tRNA ?

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?

Give an experimental proof of triplet codon.

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

If radioactive amino acid is introduced in cell which is actively involved in protein synthesis. The radioactivity first appear in

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