Which of the following m-RNA sequences can be | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) For an $m-RNA$ to be completely translated,it must contain a start codon $(AUG)$ to initiate translation and a stop codon ($UAA, UAG,$ or $UGA$) t

Vedclass · Accepted Answer

$(b)$ and $(d)$

Vedclass · Answer

(B) For an $m-RNA$ to be completely translated,it must contain a start codon $(AUG)$ to initiate translation and a stop codon ($UAA, UAG,$ or $UGA$) to terminate it,with the sequence between them being in-frame.$1$. Option $(a)$: $5'-AUG\ UGA\ UUA\ AAG\ AAA-3'$. Here,$UGA$ is a stop codon immediately following the start codon $AUG$. This will result in a very short peptide or no translation,as the stop codon is encountered too early.$2$. Option $(b)$: $5'-AUG\ AUA\ UUG\ CCC\ UGA-3'$. This sequence starts with $AUG$ (start codon) and ends with $UGA$ (stop codon). The codons in between $(AUA, UUG, CCC)$ are sense codons. Thus,it can be translated.$3$. Option $(c)$: $5'-AGU\ UCC\ AGA\ CUC\ UAA-3'$. This sequence lacks a start codon $(AUG)$. Therefore,translation cannot be initiated.$4$. Option $(d)$: $5'-AUG\ UAC\ AGU\ AAC\ UAG-3'$. This sequence starts with $AUG$ (start codon) and ends with $UAG$ (stop codon). The codons in between $(UAC, AGU, AAC)$ are sense codons. Thus,it can be translated.Therefore,sequences $(b)$ and $(d)$ can be completely translated.

Which of the following $m-RNA$ sequences can be completely translated into a polypeptide chain?
$(a)\ 5'-AUG\ UGA\ UUA\ AAG\ AAA-3'$
$(b)\ 5'-AUG\ AUA\ UUG\ CCC\ UGA-3'$
$(c)\ 5'-AGU\ UCC\ AGA\ CUC\ UAA-3'$
$(d)\ 5'-AUG\ UAC\ AGU\ AAC\ UAG-3'$

Similar Questions

$AUG$ performs two functions.

How did the genetic code come into existence?

Beadle and Tatum observed that each type of mutant bread mold showed the absence of a specific type of enzyme. Their experiments demonstrated that:.......

Which triplet codon acts as a stop signal for the process of translation?

The genetic code of the checkerboard (codon table) is not applicable to which of the following?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Which of the following $m-RNA$ sequences can be completely translated into a polypeptide chain?$(a)\ 5'-AUG\ UGA\ UUA\ AAG\ AAA-3'$$(b)\ 5'-AUG\ AUA\ UUG\ CCC\ UGA-3'$$(c)\ 5'-AGU\ UCC\ AGA\ CUC\ UAA-3'$$(d)\ 5'-AUG\ UAC\ AGU\ AAC\ UAG-3'$