Question


U C U Phe Phe Leu Leu Leu 1st base in codon C Leu Ser Ser Ser Ser Pro Pro Pro Pro Thr Thr Thr Thr Ala Ala Ala Ala Leu Leu lle

For the following DNA strand, what is the amino acid chain that would result in the cell? 

CGGTTATCTAAAGTACACTATCATGGC 


  • Arg - leu - ser-lys - val - his - tyr-his-gly 

  • Ala - asn- - arg - phe - his - val - ile - val - pro 

  • met - ile -val - tyr - phe - arg 

  • Ala-met-ile-val-tyr - phe - arg - pro

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Answer #1

Answer :

Amino acids are the monomeric unit of proteins (polypeptides).

From DNA, genetic information is transferred in to mRNA by the process transcription and based on the information loaded in mRNA, proteins are formed (translation).

Each amino acid is represented by codons.

Genetic code is degenerative, different codon can code one amino acid.

First letter of the codon from the left portion of genetic code, second from upper, and last letter from right side.

So the amino acid chain is

CGGTTATCTAAAGTACACTATCATGGC DNA GCC AAU AGA UUU CAU GUG AUA GUA CCG mRNA Ala - asn - arg - phe - his - val- ile -val - pro Pr

So the answer is second option.

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