Molecular-Basis-Of-Inheritance Question 209

Question: Select the incorrect statement(s) about genetic codon.

(i) Six codons do not code for any amino acid. (ii) Codon is read in mRNA in a contiguous fashion. (iii) Three codons function as stop codons. (iv) The initiation codon AUG codes for methionine.

Options:

A) (i) only

B) (ii) only

C) (i), (ii) and (iv)

D) (i), (ii) and (iii)

Show Answer

Answer:

Correct Answer: A

Solution:

[a] 3 codons do not code for any amino acid.

Such codons are called non-sense codons or terminator codon.

Eg UAG, UAA & UGA.