Read the given statement and identify the property of genetic code to which it is an exception: GUG normally codes for valine, but at the start position, it codes for methionine.

Question

Read the given statement and identify the property of genetic code to which it is an exception: GUG normally codes for valine, but at the start position, it codes for methionine. (A) Degeneracy (B) Non-overlapping (C) Ambiguous nature (D) Unambiguous nature

Tardigrade Admin · Accepted Answer

A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. There are in all 64 codons out of which 61 codons code for amino acids and 3 codons code for nothing. Non-coding codons (UAA, UGA, and UAG) are also known as stop codons. Following are the properties exhibited by codons:

It is a triplet
Degeneracy
Non-overlapping
Comma less
Unambiguous
Universal
Co-linearity
Gene-polypeptide parity

Genetic codes are unambiguous, i.e. one codon codes for only one amino acid and specific i.e. one codon codes for only one amino acid. But GUG is ambiguous codon. It normally codes for valine but at initiating position it codes for methionine as well.

Q. Read the given statement and identify the property of genetic code to which it is an exception: GUG normally codes for valine, but at the start position, it codes for methionine.

Degeneracy

Non-overlapping

Ambiguous nature

Unambiguous nature

Q. Read the given statement and identify the property of genetic code to which it is an exception:
GUG normally codes for valine, but at the start position, it codes for methionine.