Assertion : Untranslated regions are sequences of RNA before initiation codon and after termination codon.
Reason : Untranslated regions provide stability to mRNA and also increase translational efficiency.

Assertion : An mRNA has both initiation codon and termination codon. Reason : It specifies only a single polypeptide or number of them.

Assertion (A): The process of translation or protein synthesis 'terminates when the A-site of ribosome encounters a termination codon. Reason (R): A release factor liinds to the stop codon and translation is terminated.

Assertion : A monocistronic mRNA can produce several types of polypepitude chains . Reason : The terminator codon is present on the mRNA.

Assertion (A): Termination codons or stop codons are UAA, UAG and UGA. Reason (R): Stop codons represent termination of translation.

Assertion A single-strand of mRNA is capable of forming different polypeptide chains Reason Termination codons occur in mRNA

Consider the following statements with respect to translation. A. Translation refers to the process of polymerisation of ribonucleotides. B. The site of translation (protein synthesis) is ribosomes. (D) An m-RNA also has untranslated regions (UTR) that are not translated. Of the above statements :

Consider the following statements w.r.t. a translational unit in mRNA a. a . UTRs are present after start codon and before stop codons. b. It is the sequence of RNA that is flanked by start codon (AUG) and stop codon. C. It codes for a polypeptide. d. UTRs are needed for efficient translation process.

Consider the following statements w.r.t. a translational unit in mRNAa. a . UTRs are present after start codon and before stop codons. b. It is the sequence of RNA that is flanked by start codon (AUG) and stop codon. C. It codes for a polypeptide. d. UTRs are needed for efficient translation process.

Assertion: A non-overlapping code means that a base in mRNA is not used for different codons Reason: In translating mRNA molecules, the codons do not overlap but are read sequentially

Assertion: Amber codon is a terminating codon. Reason: If in a mRNA, a termination codon is present, the protein synthesis stops abruptly whether the protein synthesis is complete or not.