The first codon discovered by Nirenberg and M | vedclass

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

Question

(C) In $1961$,Marshall $Nirenberg$ and Heinrich $Matthaei$ performed a landmark experiment to crack the genetic code. They used a synthetic poly-uraci

Vedclass · Accepted Answer

$UUU$

Vedclass · Answer

(C) In $1961$,Marshall $Nirenberg$ and Heinrich $Matthaei$ performed a landmark experiment to crack the genetic code. They used a synthetic poly-uracil $(poly-U)$ $RNA$ sequence in a cell-free system. They observed that this $poly-U$ sequence directed the synthesis of a polypeptide chain consisting entirely of the amino acid phenylalanine. Since the codon $UUU$ was the only repeating unit in the $poly-U$ sequence,they concluded that $UUU$ codes for phenylalanine. Thus,$UUU$ was the first codon to be deciphered.

The first codon discovered by $Nirenberg$ and $Matthaei$ was:

Similar Questions

Which is the initiation codon for protein synthesis in eukaryotes?

Assertion : $UAA, UAG$ and $UGA$ terminate protein synthesis.
Reason : They are not recognised by $tRNA$.

The genetic code is composed of .......

Which of the following statements regarding the genetic code is incorrect?
$i.$ The codon is a triplet.
$ii.$ $64$ codons code for amino acids.
$iii.$ The genetic code is unambiguous.
$iv.$ The genetic code is universal.
$v.$ $AUG$ has dual functions.

Which of the following statements is $NOT$ true regarding the genetic code?

Vedclass Test Series

Exam Paper Generator

Online Exam Module