Question

Select the incorrect statement(s).

1. Six codons do not code for any amino acid.

2. Codon is read in mRNA in a contiguous fashion.

3. Three codons function as stop codons.

4. The initiator codon AUG codes for methionine .

• A. 1, 2 and 4 are incorrect.
• B. 1, 2 and 3 are incorrect.
• C. 2, 3 and 4 are incorrect.
• D. 2 alone is incorrect.
• E. 1 is incorrect.

Answer 1

The correct option is E 1 is incorrect.

There are three codons that do not code for any amino acid called the stop codons. They are UAG, UAA, UGA.

Hence the statement 1 is incorrect.

Genetic code is a triplet codon that means three RNA bases codes for an amino acid. The codon AUG codes for methionine and is called the start codon.